{"id":20516,"date":"2025-12-03T10:38:48","date_gmt":"2025-12-03T02:38:48","guid":{"rendered":"https:\/\/viox.com\/?p=20516"},"modified":"2025-12-03T10:38:50","modified_gmt":"2025-12-03T02:38:50","slug":"mov-vs-gdt-vs-tvs-comparison","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/mov-vs-gdt-vs-tvs-comparison\/","title":{"rendered":"MOV vs GDT vs TVS \u6d6a\u6d8c\u4fdd\u62a4\uff1a\u6280\u672f\u5bf9\u6bd4"},"content":{"rendered":"<div class=\"product-intro\">\n<h2>Gi\u1edbi thi\u1ec7u<\/h2>\n<p>\u5728\u4e3a\u7535\u6c14\u7cfb\u7edf\u6307\u5b9a\u6d6a\u6d8c\u4fdd\u62a4\u65b9\u6848\u65f6\uff0c\u5de5\u7a0b\u5e08\u9700\u5728\u4e09\u79cd\u6838\u5fc3\u6280\u672f\u95f4\u505a\u51fa\u6839\u672c\u6027\u9009\u62e9\uff1a\u91d1\u5c5e\u6c27\u5316\u7269\u538b\u654f\u7535\u963b\uff08<a href=\"https:\/\/test.viox.com\/vi\/mov-surge-protector-invisible-resistor-problem\/\">MOV<\/a>\uff09\u3001\u6c14\u4f53\u653e\u7535\u7ba1\uff08GDT\uff09\u548c\u77ac\u6001\u7535\u538b\u6291\u5236\uff08TVS\uff09\u4e8c\u6781\u7ba1\u3002\u6bcf\u79cd\u6280\u672f\u57fa\u4e8e\u4e0d\u540c\u7684\u7269\u7406\u539f\u7406\u5448\u73b0\u51fa\u72ec\u7279\u7684\u6027\u80fd\u7279\u5f81\u2014\u2014MOV\u5229\u7528\u975e\u7ebf\u6027\u9676\u74f7\u7535\u963b\u7279\u6027\uff0cGDT\u4f9d\u8d56\u6c14\u4f53\u7535\u79bb\u6548\u5e94\uff0cTVS\u4e8c\u6781\u7ba1\u5219\u8fd0\u7528\u534a\u5bfc\u4f53\u96ea\u5d29\u51fb\u7a7f\u539f\u7406\u3002.<\/p>\n<p>\u9009\u62e9\u8fc7\u7a0b\u5e76\u975e\u5bfb\u627e\u201c\u6700\u4f18\u201d\u6280\u672f\uff0c\u800c\u662f\u6839\u636e\u5e94\u7528\u9700\u6c42\u5339\u914d\u5176\u6839\u672c\u6027\u7684\u6027\u80fd\u6743\u8861\u3002\u5728\u4ea4\u6d41\u914d\u7535\u7cfb\u7edf\u4e2d\u8868\u73b0\u51fa\u8272\u7684MOV\uff0c\u82e5\u7528\u4e8e\u9ad8\u901f\u6570\u636e\u7ebf\u8def\u53ef\u80fd\u5bfc\u81f4\u707e\u96be\u6027\u6545\u969c\uff1b\u9002\u7528\u4e8e\u7535\u4fe1\u63a5\u53e3\u7684GDT\u82e5\u7528\u4e8e5V\u76f4\u6d41\u7535\u6e90\u8f68\u5219\u5b8c\u5168\u9519\u8bef\uff1b\u4e3a\u677f\u7ea7I\/O\u8bbe\u8ba1\u7684\u7406\u60f3TVS\u4e8c\u6781\u7ba1\uff0c\u5728\u66b4\u9732\u4e8e\u96f7\u51fb\u7684\u6237\u5916\u7535\u8def\u4e2d\u53ef\u80fd\u4e0d\u582a\u91cd\u8d1f\u3002.<\/p>\n<p>\u672c\u6587\u5c06\u4ece\u57fa\u672c\u539f\u7406\u51fa\u53d1\u5256\u6790\u6bcf\u79cd\u6280\u672f\uff0c\u9610\u91ca\u5176\u6027\u80fd\u5dee\u5f02\u80cc\u540e\u7684\u7269\u7406\u673a\u5236\uff0c\u5e76\u5728\u54cd\u5e94\u65f6\u95f4\u3001\u94b3\u4f4d\u7535\u538b\u3001\u80fd\u91cf\u8010\u53d7\u3001\u7535\u5bb9\u7279\u6027\u3001\u8001\u5316\u884c\u4e3a\u548c\u6210\u672c\u7b49\u65b9\u9762\u63d0\u4f9b\u91cf\u5316\u5bf9\u6bd4\u3002\u65e0\u8bba\u60a8\u662f\u8bbe\u8ba1\u914d\u7535\u7cfb\u7edf <a href=\"https:\/\/test.viox.com\/vi\/spd\/\">SPD<\/a>, \u3001\u4fdd\u62a4\u901a\u4fe1\u63a5\u53e3\uff0c\u8fd8\u662f\u534f\u8c03\u591a\u7ea7\u4fdd\u62a4\u65b9\u6848\uff0c\u7406\u89e3\u8fd9\u4e9b\u6839\u672c\u5dee\u5f02\u5c06\u5e2e\u52a9\u60a8\u9009\u62e9\u771f\u6b63\u5177\u5907\u4fdd\u62a4\u529f\u80fd\u7684\u5143\u4ef6\u2014\u2014\u800c\u975e\u4ec5\u4ec5\u6ee1\u8db3\u91c7\u8d2d\u6e05\u5355\u8981\u6c42\u3002.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/img.viox.com\/Physical-comparison-of-three-surge-protection-technologies.webp\" alt=\"Surge Protection Components Visual Comparison\" \/><\/figure>\n<p><em>\u56fe0\uff1a\u4e09\u79cd\u6d6a\u6d8c\u4fdd\u62a4\u6280\u672f\u7684\u7269\u7406\u7ed3\u6784\u5bf9\u6bd4\u3002\u5de6\uff1aMOV\uff08\u91d1\u5c5e\u6c27\u5316\u7269\u538b\u654f\u7535\u963b\uff09\u5448\u73b0\u6807\u5fd7\u6027\u7684\u84dd\u8272\u6c27\u5316\u950c\u9676\u74f7\u5706\u76d8\u4e0e\u5f84\u5411\u5f15\u7ebf\u2014\u2014\u7269\u7406\u5c3a\u5bf8\u968f\u989d\u5b9a\u7535\u538b\uff08\u5706\u76d8\u539a\u5ea6\uff09\u548c\u901a\u6d41\u80fd\u529b\uff08\u5706\u76d8\u76f4\u5f84\uff09\u6309\u6bd4\u4f8b\u53d8\u5316\u3002\u4e2d\uff1aGDT\uff08\u6c14\u4f53\u653e\u7535\u7ba1\uff09\u5c55\u793a\u5706\u67f1\u5f62\u5bc6\u5c01\u73bb\u7483\/\u9676\u74f7\u5916\u58f3\uff0c\u5185\u542b\u60f0\u6027\u6c14\u4f53\u4e0e\u7535\u6781\u2014\u2014\u6c14\u5bc6\u7ed3\u6784\u786e\u4fdd\u7a33\u5b9a\u7684\u706b\u82b1\u653e\u7535\u7279\u6027\u3002\u53f3\uff1aTVS\u4e8c\u6781\u7ba1\u5c55\u793a\u4ece\u7d27\u51d1\u578b\u8d34\u7247\u5c01\u88c5\uff080402\u3001SOT-23\uff09\u5230\u8f83\u5927\u901a\u5b54\u5c01\u88c5\uff08DO-201\u3001DO-218\uff09\u7b49\u591a\u79cd\u534a\u5bfc\u4f53\u5c01\u88c5\u5f62\u5f0f\u2014\u2014\u7845\u7247\u5c3a\u5bf8\u51b3\u5b9a\u8109\u51b2\u529f\u7387\u989d\u5b9a\u503c\u3002\u8fd9\u4e9b\u663e\u8457\u7684\u7269\u7406\u5dee\u5f02\u53cd\u6620\u4e86\u6839\u672c\u4e0d\u540c\u7684\u5de5\u4f5c\u539f\u7406\uff1a\u9676\u74f7\u6676\u754c\u7ed3\uff08MOV\uff09\u3001\u6c14\u4f53\u7535\u79bb\u7b49\u79bb\u5b50\u4f53\uff08GDT\uff09\u548c\u534a\u5bfc\u4f53\u96ea\u5d29\u51fb\u7a7f\uff08TVS\uff09\u3002.<\/em><\/p>\n<h2>MOV\uff08\u91d1\u5c5e\u6c27\u5316\u7269\u538b\u654f\u7535\u963b\uff09\uff1a\u7ed3\u6784\u4e0e\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u91d1\u5c5e\u6c27\u5316\u7269\u538b\u654f\u7535\u963b\u662f\u4e00\u79cd\u9676\u74f7\u534a\u5bfc\u4f53\u5668\u4ef6\uff0c\u5176\u7535\u963b\u503c\u968f\u7535\u538b\u5347\u9ad8\u6025\u5267\u4e0b\u964d\u3002\u8fd9\u79cd\u538b\u654f\u7279\u6027\u4f7f\u5176\u5982\u540c\u81ea\u52a8\u7535\u538b\u94b3\u4f4d\u5668\u2014\u2014\u5728\u6d6a\u6d8c\u671f\u95f4\u5927\u7535\u6d41\u5bfc\u901a\uff0c\u5728\u6b63\u5e38\u5de5\u4f5c\u65f6\u51e0\u4e4e\u9690\u5f62\u3002.<\/p>\n<h3>\u5185\u90e8\u7ed3\u6784<\/h3>\n<p>MOV\u7531\u6c27\u5316\u950c\uff08ZnO\uff09\u6676\u7c92\u4e0e\u5fae\u91cf\u94cb\u3001\u94b4\u3001\u9530\u7b49\u91d1\u5c5e\u6c27\u5316\u7269\u70e7\u7ed3\u800c\u6210\u3002\u5176\u5965\u79d8\u5728\u4e8e\u6676\u754c\u5904\uff1a\u76f8\u90bbZnO\u6676\u7c92\u95f4\u7684\u6bcf\u4e2a\u8fb9\u754c\u90fd\u5f62\u6210\u5fae\u89c2\u8096\u7279\u57fa\u52bf\u5792\u2014\u2014\u672c\u8d28\u4e0a\u662f\u4e00\u5bf9\u80cc\u9760\u80cc\u7684\u5fae\u578b\u4e8c\u6781\u7ba1\u7ed3\u3002\u5355\u4e2aMOV\u5706\u76d8\u5305\u542b\u6570\u767e\u4e07\u4e2a\u6b64\u7c7b\u5fae\u7ed3\uff0c\u4ee5\u590d\u6742\u7684\u4e09\u7ef4\u4e32\u5e76\u8054\u7f51\u7edc\u8fde\u63a5\u3002.<\/p>\n<p>\u5668\u4ef6\u7684\u6574\u4f53\u7279\u6027\u6e90\u4e8e\u8fd9\u79cd\u5fae\u89c2\u7ed3\u6784\u3002\u5706\u76d8\u539a\u5ea6\u51b3\u5b9a\u5de5\u4f5c\u7535\u538b\uff08\u4e32\u8054\u6676\u754c\u6570\u91cf\u8d8a\u591a\uff0c\u989d\u5b9a\u7535\u538b\u8d8a\u9ad8\uff09\uff1b\u5706\u76d8\u76f4\u5f84\u51b3\u5b9a\u901a\u6d41\u80fd\u529b\uff08\u5e76\u8054\u8def\u5f84\u8d8a\u591a\uff0c\u6d6a\u6d8c\u7535\u6d41\u8010\u53d7\u8d8a\u5f3a\uff09\u3002\u56e0\u6b64MOV\u6570\u636e\u624b\u518c\u4f1a\u6807\u6ce8\u6bcf\u6beb\u7c73\u539a\u5ea6\u7684\u538b\u654f\u7535\u538b\u503c\uff0c\u800c\u7528\u4e8e\u914d\u7535\u7684\u9ad8\u80fdMOV\u901a\u5e38\u91c7\u7528\u7269\u7406\u5c3a\u5bf8\u8f83\u5927\u7684\u5757\u72b6\u6216\u5706\u76d8\u7ec4\u4ef6\u3002.<\/p>\n<h3>H\u00e0nh Nguy\u00ean T\u1eafc<\/h3>\n<p>\u5f53\u7535\u538b\u4f4e\u4e8e\u538b\u654f\u7535\u538b\uff08V\u1d65\uff09\u65f6\uff0c\u6676\u754c\u7ed3\u4fdd\u6301\u8017\u5c3d\u72b6\u6001\uff0c\u5668\u4ef6\u4ec5\u5438\u6536\u5fae\u5b89\u7ea7\u6f0f\u7535\u6d41\u3002\u5f53\u6d6a\u6d8c\u7535\u538b\u8d85\u8fc7V\u1d65\u65f6\uff0c\u7ed3\u533a\u901a\u8fc7\u91cf\u5b50\u96a7\u7a7f\u548c\u96ea\u5d29\u500d\u589e\u6548\u5e94\u51fb\u7a7f\uff0c\u7535\u963b\u4ece\u5146\u6b27\u7ea7\u9aa4\u964d\u81f3\u6b27\u59c6\u7ea7\uff0cMOV\u5c06\u6d6a\u6d8c\u7535\u6d41\u6cc4\u653e\u81f3\u5730\u3002.<\/p>\n<p>\u8fd9\u79cd\u8f6c\u53d8\u672c\u8d28\u4e0a\u662f\u5feb\u901f\u7684\u2014\u2014\u6750\u6599\u5c42\u9762\u7684\u54cd\u5e94\u53ef\u8fbe\u4e9a\u7eb3\u79d2\u7ea7\u3002\u6807\u51c6\u76ee\u5f55MOV\u7684\u54cd\u5e94\u65f6\u95f4\u4f4e\u4e8e25\u7eb3\u79d2\uff0c\u4e3b\u8981\u53d7\u9650\u4e8e\u5f15\u7ebf\u7535\u611f\u548c\u5c01\u88c5\u7ed3\u6784\uff0c\u800c\u975eZnO\u7684\u7269\u7406\u7279\u6027\u3002\u5176\u7535\u538b-\u7535\u6d41\u7279\u6027\u5448\u73b0\u9ad8\u5ea6\u975e\u7ebf\u6027\uff0c\u901a\u5e38\u7528\u516c\u5f0fI = K\u00b7V\u1d45\u63cf\u8ff0\uff0c\u975e\u7ebf\u6027\u7cfb\u6570\u03b1\u8303\u56f4\u4e3a25\u81f350\uff08\u7ebf\u6027\u7535\u963b\u7684\u03b1=1\uff09\u3002.<\/p>\n<h3>\u5173\u952e\u53c2\u6570\u4e0e\u7279\u6027<\/h3>\n<p><strong>\u80fd\u91cf\u8010\u53d7<\/strong>\uff1aMOV\u64c5\u957f\u5438\u6536\u6d6a\u6d8c\u80fd\u91cf\u3002\u5236\u9020\u5546\u91c7\u75282\u6beb\u79d2\u77e9\u5f62\u8109\u51b2\u6807\u5b9a\u80fd\u91cf\u8010\u53d7\u80fd\u529b\uff0c\u4f7f\u7528\u6807\u51c68\/20\u5fae\u79d2\u6ce2\u5f62\u6807\u5b9a\u6d6a\u6d8c\u7535\u6d41\u3002\u7528\u4e8e\u914d\u7535\u7684\u5757\u72b6MOV\u5355\u6b21\u4e8b\u4ef6\u53ef\u5904\u740610,000\u81f3100,000\u5b89\u57f9\u6d6a\u6d8c\u7535\u6d41\u3002.<\/p>\n<p><strong>\u8001\u5316\u4e0e\u9000\u5316<\/strong>\uff1a\u53cd\u590d\u627f\u53d7\u6d6a\u6d8c\u4f1a\u5bfc\u81f4\u7d2f\u79ef\u6027\u5fae\u89c2\u7ed3\u6784\u635f\u4f24\u3002\u538b\u654f\u7535\u538b\u9010\u6e10\u964d\u4f4e\uff0c\u6f0f\u7535\u6d41\u589e\u52a0\uff0c\u94b3\u4f4d\u6027\u80fd\u9000\u5316\u3002\u4e25\u91cd\u8fc7\u8f7d\u53ef\u80fd\u51fb\u7a7f\u6676\u754c\uff0c\u5f62\u6210\u6c38\u4e45\u6027\u5bfc\u7535\u8def\u5f84\u3002\u56e0\u6b64\u6570\u636e\u624b\u518c\u4f1a\u89c4\u5b9a\u91cd\u590d\u6d6a\u6d8c\u7684\u964d\u989d\u7cfb\u6570\uff0c\u5173\u952e\u88c5\u7f6e\u5e94\u5c06MOV\u6f0f\u7535\u6d41\u4f5c\u4e3a\u7ef4\u62a4\u53c2\u6570\u8fdb\u884c\u76d1\u6d4b\u3002.<\/p>\n<p><strong>\u0110i\u1ec3n H\u00ecnh \u1ee8ng D\u1ee5ng<\/strong>\uff1a\u4ea4\u6d41\u7535\u6e90\u6d6a\u6d8c\u4fdd\u62a4\u3001\u914d\u7535\u76d8\u3001\u5de5\u4e1a\u7535\u673a\u9a71\u52a8\u5668\u3001\u91cd\u578b\u8bbe\u5907\u4ee5\u53ca\u4efb\u4f55\u9700\u8981\u9ad8\u80fd\u91cf\u5438\u6536\u548c\u5feb\u901f\uff08\u7eb3\u79d2\u7ea7\uff09\u54cd\u5e94\u7684\u5e94\u7528\u3002.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/img.viox.com\/MOV-cutaway-section-showing-zinc-oxide-ZnO-grains-embedded-in-ceramic-matrix-with-inter-granular-boundaries-magnified-inset.webp\" alt=\"MOV Internal Structure - Zinc Oxide Grain Architecture\" \/><\/figure>\n<p><em>\u56fe1\uff1a\u538b\u654f\u7535\u963b\u5256\u9762\u56fe\uff0c\u5c55\u793a\u5d4c\u5165\u9676\u74f7\u57fa\u4f53\u4e2d\u7684\u6c27\u5316\u950c\uff08ZnO\uff09\u6676\u7c92\u53ca\u6676\u754c\uff08\u653e\u5927\u63d2\u56fe\uff09\u3002\u6bcf\u4e2a\u6676\u754c\u5f62\u6210\u4e00\u4e2a\u5fae\u89c2\u8096\u7279\u57fa\u52bf\u5792\uff0c\u6784\u6210\u6570\u767e\u4e07\u4e2a\u4e32\u5e76\u8054\u6392\u5217\u7684\u5fae\u7ed3\u3002\u5706\u7247\u7684\u7269\u7406\u5c3a\u5bf8\u2014\u2014\u539a\u5ea6\u51b3\u5b9a\u989d\u5b9a\u7535\u538b\uff08\u4e32\u8054\u6676\u754c\u8d8a\u591a\uff09\uff0c\u76f4\u5f84\u51b3\u5b9a\u901a\u6d41\u80fd\u529b\uff08\u5e76\u8054\u8def\u5f84\u8d8a\u591a\uff09\u2014\u2014\u76f4\u63a5\u63a7\u5236\u6d6a\u6d8c\u4fdd\u62a4\u6027\u80fd\u3002.<\/em><\/p>\n<h2>GDT\uff08\u6c14\u4f53\u653e\u7535\u7ba1\uff09\uff1a\u7ed3\u6784\u4e0e\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u6c14\u4f53\u653e\u7535\u7ba1\u91c7\u7528\u6839\u672c\u4e0d\u540c\u7684\u65b9\u6cd5\uff1a\u5b83\u4e0d\u662f\u901a\u8fc7\u975e\u7ebf\u6027\u7535\u963b\u94b3\u4f4d\u7535\u538b\uff0c\u800c\u662f\u5728\u7535\u538b\u8d85\u8fc7\u9608\u503c\u65f6\u5f62\u6210\u4e34\u65f6\u77ed\u8def\u3002\u8fd9\u79cd\u201c\u64ac\u68d2\u201d\u5f0f\u52a8\u4f5c\u901a\u8fc7\u7535\u79bb\u6c14\u4f53\u800c\u975e\u56fa\u6001\u6750\u6599\u6765\u6cc4\u653e\u6d6a\u6d8c\u7535\u6d41\u3002.<\/p>\n<h3>\u5185\u90e8\u7ed3\u6784<\/h3>\n<p>GDT\u7531\u4e24\u4e2a\u6216\u4e09\u4e2a\u7535\u6781\u7ec4\u6210\uff0c\u5bc6\u5c01\u5728\u586b\u5145\u60f0\u6027\u6c14\u4f53\uff08\u901a\u5e38\u662f\u6c29\u3001\u6c16\u6216\u6c19\u7684\u6df7\u5408\u6c14\u4f53\uff0c\u538b\u529b\u4f4e\u4e8e\u5927\u6c14\u538b\uff09\u7684\u9676\u74f7\u6216\u73bb\u7483\u5916\u58f3\u5185\u3002\u7535\u6781\u95f4\u9699\u548c\u6c14\u4f53\u6210\u5206\u51b3\u5b9a\u51fb\u7a7f\u7535\u538b\u3002\u6c14\u5bc6\u5bc6\u5c01\u81f3\u5173\u91cd\u8981\u2014\u2014\u4efb\u4f55\u6c61\u67d3\u6216\u538b\u529b\u53d8\u5316\u90fd\u4f1a\u6539\u53d8\u51fb\u7a7f\u7279\u6027\u3002.<\/p>\n<p>\u4e09\u7535\u6781GDT\u5e38\u89c1\u4e8e\u7535\u4fe1\u5e94\u7528\uff0c\u53ef\u5728\u5355\u4e2a\u5143\u4ef6\u4e2d\u63d0\u4f9b\u7ebf\u95f4\u548c\u7ebf\u5bf9\u5730\u4fdd\u62a4\u3002\u53cc\u7535\u6781\u7248\u672c\u7528\u4e8e\u8f83\u7b80\u5355\u7684\u7ebf\u5bf9\u5730\u914d\u7f6e\u3002\u7535\u6781\u901a\u5e38\u6d82\u8986\u6709\u964d\u4f4e\u51fb\u7a7f\u7535\u538b\u548c\u7a33\u5b9a\u7535\u5f27\u5f62\u6210\u7684\u6750\u6599\u3002.<\/p>\n<h3>H\u00e0nh Nguy\u00ean T\u1eafc<\/h3>\n<p>\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u6c14\u4f53\u4e0d\u5bfc\u7535\uff0cGDT\u5448\u73b0\u63a5\u8fd1\u65e0\u7a77\u5927\u7684\u963b\u6297\uff08&gt;10\u2079 \u03a9\uff09\u548c\u6781\u4f4e\u7684\u7535\u5bb9\u2014\u2014\u901a\u5e38\u4f4e\u4e8e2\u76ae\u6cd5\u3002\u5f53\u77ac\u6001\u7535\u538b\u8d85\u8fc7\u706b\u82b1\u653e\u7535\u7535\u538b\u65f6\uff0c\u7535\u573a\u4f7f\u6c14\u4f53\u7535\u79bb\u3002\u81ea\u7531\u7535\u5b50\u52a0\u901f\u5e76\u4e0e\u6c14\u4f53\u539f\u5b50\u78b0\u649e\uff0c\u5728\u96ea\u5d29\u8fc7\u7a0b\u4e2d\u91ca\u653e\u66f4\u591a\u7535\u5b50\u3002\u5728\u4e0d\u5230\u4e00\u5fae\u79d2\u7684\u65f6\u95f4\u5185\uff0c\u7535\u6781\u95f4\u5f62\u6210\u5bfc\u7535\u7b49\u79bb\u5b50\u4f53\u901a\u9053\u3002.<\/p>\n<p>\u4e00\u65e6\u7535\u79bb\uff0cGDT\u8fdb\u5165\u7535\u5f27\u6a21\u5f0f\u3002\u5668\u4ef6\u4e24\u7aef\u7535\u538b\u9aa4\u964d\u81f3\u4f4e\u7535\u5f27\u7535\u538b\u2014\u2014\u901a\u5e38\u4e3a10-20\u4f0f\uff0c\u4e0e\u521d\u59cb\u51fb\u7a7f\u7535\u538b\u65e0\u5173\u3002\u6b64\u65f6\u5668\u4ef6\u8fd1\u4f3c\u77ed\u8def\uff0c\u901a\u8fc7\u7b49\u79bb\u5b50\u4f53\u6cc4\u653e\u6d6a\u6d8c\u7535\u6d41\u3002\u7535\u5f27\u6301\u7eed\u5b58\u5728\u76f4\u81f3\u7535\u6d41\u964d\u81f3\u201c\u8f89\u5149-\u7535\u5f27\u8f6c\u6362\u7535\u6d41\u201d\u4ee5\u4e0b\uff08\u901a\u5e38\u4e3a\u6570\u5341\u6beb\u5b89\uff09\u3002.<\/p>\n<p>\u8fd9\u79cd\u64ac\u68d2\u884c\u4e3a\u5e26\u6765\u5173\u952e\u8bbe\u8ba1\u8003\u91cf\uff1a\u5982\u679c\u88ab\u4fdd\u62a4\u7535\u8def\u80fd\u591f\u63d0\u4f9b\u9ad8\u4e8e\u8f89\u5149\u9608\u503c\u7684\u8db3\u591f\u201c\u7eed\u6d41\u201d\uff0c\u5373\u4f7f\u5728\u77ac\u6001\u7ed3\u675f\u540e\uff0cGDT\u4e5f\u53ef\u80fd\u4fdd\u6301\u5bfc\u901a\u72b6\u6001\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u4ea4\u6d41\u7535\u6e90\u4e0a\u7684GDT\u9700\u8981\u4e32\u8054\u7535\u963b\u6216\u4e0e\u4e0a\u6e38\u65ad\u8def\u5668\u534f\u8c03\u914d\u5408\u3002\u5728\u4f4e\u963b\u6297\u76f4\u6d41\u7535\u6e90\u4e2d\uff0c\u7eed\u6d41\u9501\u5b9a\u53ef\u80fd\u5bfc\u81f4\u707e\u96be\u6027\u540e\u679c\u3002.<\/p>\n<h3>\u5173\u952e\u53c2\u6570\u4e0e\u7279\u6027<\/h3>\n<p><strong>\u6d6a\u6d8c\u7535\u6d41\u80fd\u529b<\/strong>\uff1aGDT\u53ef\u5904\u7406\u6781\u9ad8\u7684\u6d6a\u6d8c\u7535\u6d41\u2014\u2014\u5178\u578b\u7535\u4fe1\u7ea7\u5668\u4ef6\u989d\u5b9a\u503c\u4e3a10,000\u81f320,000\u5b89\u57f9\uff088\/20 \u00b5s\u6ce2\u5f62\uff09\uff0c\u4e14\u5177\u6709\u591a\u6b21\u8010\u53d7\u80fd\u529b\u3002\u8fd9\u79cd\u9ad8\u5bb9\u91cf\u6e90\u4e8e\u7b49\u79bb\u5b50\u4f53\u901a\u9053\u7684\u5206\u5e03\u5f0f\u7279\u6027\uff0c\u800c\u975e\u5c40\u90e8\u56fa\u6001\u7ed3\u3002.<\/p>\n<p><strong>\u7535\u5bb9<\/strong>\uff1aGDT\u7684\u51b3\u5b9a\u6027\u4f18\u52bf\u5728\u4e8e\u5176\u4f4e\u4e8e2 pF\u7684\u7535\u5bb9\uff0c\u4f7f\u5176\u5bf9\u9ad8\u901f\u4fe1\u53f7\u900f\u660e\u3002\u8fd9\u5c31\u662f\u5b83\u4eec\u5728\u7535\u4fe1\u7ebf\u8def\u4fdd\u62a4\u4e2d\u5360\u4e3b\u5bfc\u5730\u4f4d\u7684\u539f\u56e0\uff1axDSL\u3001\u6709\u7ebf\u5bbd\u5e26\u548c\u5343\u5146\u4ee5\u592a\u7f51\u65e0\u6cd5\u627f\u53d7\u538b\u654f\u7535\u963b\u6216\u8bb8\u591aTVS\u5668\u4ef6\u7684\u7535\u5bb9\u3002.<\/p>\n<p><strong>Ph\u1ea3n \u1ee8ng Th\u1eddi Gian<\/strong>\uff1aGDT\u6bd4\u56fa\u6001\u5668\u4ef6\u54cd\u5e94\u6162\u3002\u51fb\u7a7f\u901a\u5e38\u53d1\u751f\u5728\u6570\u767e\u7eb3\u79d2\u81f3\u51e0\u5fae\u79d2\u5185\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u7535\u538b\u8fc7\u51b2\uff08\u66f4\u9ad8\u7684dV\/dt\u4f1a\u52a0\u901f\u7535\u79bb\uff09\u3002\u5bf9\u4e8e\u654f\u611f\u7535\u5b50\u8bbe\u5907\u4e0a\u7684\u5feb\u901f\u77ac\u53d8\uff0cGDT\u901a\u5e38\u4e0e\u66f4\u5feb\u7684\u94b3\u4f4d\u5668\u4ef6\u914d\u5408\u4f7f\u7528\uff0c\u5f62\u6210\u534f\u8c03\u4fdd\u62a4\u65b9\u6848\u3002.<\/p>\n<p><strong>\u7a33\u5b9a\u6027\u4e0e\u5bff\u547d<\/strong>\uff1a\u4f18\u8d28GDT\u8868\u73b0\u51fa\u5353\u8d8a\u7684\u957f\u671f\u7a33\u5b9a\u6027\u3002ITU-T K.12\u548cIEEE C62.31\u6d4b\u8bd5\u65b9\u6cd5\u9a8c\u8bc1\u4e86\u6570\u5343\u6b21\u6d6a\u6d8c\u5faa\u73af\u540e\u7684\u6027\u80fd\u3002UL\u8ba4\u8bc1\u7684\u7535\u4fe1GDT\u5728\u6570\u5341\u5e74\u7684\u4f7f\u7528\u4e2d\u8868\u73b0\u51fa\u6781\u5c0f\u7684\u53c2\u6570\u6f02\u79fb\u3002.<\/p>\n<p><strong>\u0110i\u1ec3n H\u00ecnh \u1ee8ng D\u1ee5ng<\/strong>\uff1a\u7535\u4fe1\u7ebf\u8def\u4fdd\u62a4\uff08xDSL\u3001\u6709\u7ebf\u3001\u5149\u7ea4\uff09\u3001\u9ad8\u901f\u4ee5\u592a\u7f51\u63a5\u53e3\u3001\u5c04\u9891\u548c\u5929\u7ebf\u8f93\u5165\uff0c\u4ee5\u53ca\u4efb\u4f55\u5bf9\u7ebf\u8def\u8d1f\u8f7d\u8981\u6c42\u6781\u4f4e\u4e14\u6d6a\u6d8c\u6e90\u963b\u6297\u8db3\u591f\u9ad8\u4ee5\u9632\u6b62\u7eed\u6d41\u9501\u5b9a\u7684\u5e94\u7528\u3002.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/img.viox.com\/Gas-Discharge-Tube-GDT-construction-and-operating-behavior.webp\" alt=\"GDT Structure and Ionization Process\" \/><\/figure>\n<p><em>\u56fe2\uff1a\u6c14\u4f53\u653e\u7535\u7ba1\uff08GDT\uff09\u7ed3\u6784\u548c\u5de5\u4f5c\u7279\u6027\u3002\u5de6\u56fe\u663e\u793a\u5185\u90e8\u7ed3\u6784\uff1a\u5e26\u6709\u7535\u6781\u95f4\u9699\u548c\u60f0\u6027\u6c14\u4f53\u586b\u5145\uff08\u6c29\/\u6c16\uff09\u7684\u6c14\u5bc6\u5c01\u6c14\u4f53\u8154\u5ba4\u3002\u53f3\u56fe\u8bf4\u660e\u7535\u79bb\u54cd\u5e94\u2014\u2014\u5f53\u77ac\u6001\u7535\u538b\u8d85\u8fc7\u706b\u82b1\u653e\u7535\u9608\u503c\u65f6\uff0c\u6c14\u4f53\u7535\u79bb\u5f62\u6210\u5bfc\u7535\u7b49\u79bb\u5b50\u4f53\u901a\u9053\uff0c\u7535\u538b\u9aa4\u964d\u81f3\u7535\u5f27\u6a21\u5f0f\uff08\u7ea610-20V\uff09\uff0c\u6d6a\u6d8c\u7535\u6d41\u901a\u8fc7\u7b49\u79bb\u5b50\u4f53\u6cc4\u653e\u76f4\u81f3\u7535\u6d41\u964d\u81f3\u8f89\u5149-\u7535\u5f27\u8f6c\u6362\u9608\u503c\u4ee5\u4e0b\u3002.<\/em><\/p>\n<h2>TVS\u4e8c\u6781\u7ba1\uff1a\u7ed3\u6784\u4e0e\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>Diode tri\u1ec7t ti\u00eau \u0111i\u1ec7n \u00e1p tho\u00e1ng qua l\u00e0 c\u00e1c thi\u1ebft b\u1ecb avalanche silicon \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 k\u1eb9p xung \u0111i\u1ec7n \u00e1p. Ch\u00fang k\u1ebft h\u1ee3p th\u1eddi gian ph\u1ea3n h\u1ed3i nhanh nh\u1ea5t v\u1edbi \u0111i\u1ec7n \u00e1p k\u1eb9p th\u1ea5p nh\u1ea5t hi\u1ec7n c\u00f3 trong c\u00e1c th\u00e0nh ph\u1ea7n b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn \u01b0u ti\u00ean \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c m\u1ea1ch b\u00e1n d\u1eabn nh\u1ea1y c\u1ea3m.<\/p>\n<h3>\u5185\u90e8\u7ed3\u6784<\/h3>\n<p>Diode TVS v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 m\u1ed9t diode Zener chuy\u00ean d\u1ee5ng \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00f4ng su\u1ea5t xung cao h\u01a1n l\u00e0 \u0111i\u1ec1u ch\u1ec9nh \u0111i\u1ec7n \u00e1p. Die silicon c\u00f3 m\u1ed9t ti\u1ebfp gi\u00e1p P-N \u0111\u01b0\u1ee3c pha t\u1ea1p n\u1eb7ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111i v\u00e0o tr\u1ea1ng th\u00e1i \u0111\u00e1nh th\u1ee7ng avalanche \u1edf m\u1ed9t \u0111i\u1ec7n \u00e1p ch\u00ednh x\u00e1c. Di\u1ec7n t\u00edch die l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi c\u00e1c b\u1ed9 \u0111i\u1ec1u ch\u1ec9nh Zener t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u0111\u1ec3 x\u1eed l\u00fd d\u00f2ng \u0111i\u1ec7n \u0111\u1ec9nh c\u1ee7a c\u00e1c s\u1ef1 ki\u1ec7n \u0111\u1ed9t bi\u1ebfn \u0111i\u1ec7n \u00e1p\u2014h\u00e0ng tr\u0103m ampe trong c\u00e1c xung d\u01b0\u1edbi micro gi\u00e2y.<\/p>\n<h3>H\u00e0nh Nguy\u00ean T\u1eafc<\/h3>\n<p>\u1ede \u0111i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, diode TVS ho\u1ea1t \u0111\u1ed9ng \u1edf tr\u1ea1ng th\u00e1i ph\u00e2n c\u1ef1c ng\u01b0\u1ee3c v\u1edbi d\u00f2ng r\u00f2 ch\u1ec9 \u1edf m\u1ee9c nanoampe. Khi m\u1ed9t \u0111i\u1ec7n \u00e1p tho\u00e1ng qua v\u01b0\u1ee3t qu\u00e1 \u0111i\u1ec7n \u00e1p \u0111\u00e1nh th\u1ee7ng ng\u01b0\u1ee3c (V_BR), ti\u1ebfp gi\u00e1p silicon \u0111i v\u00e0o tr\u1ea1ng th\u00e1i nh\u00e2n avalanche. Ion h\u00f3a do va ch\u1ea1m t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng l\u1edbn c\u00e1c c\u1eb7p electron-l\u1ed7 tr\u1ed1ng v\u00e0 \u0111i\u1ec7n tr\u1edf ti\u1ebfp gi\u00e1p gi\u1ea3m xu\u1ed1ng. Thi\u1ebft b\u1ecb k\u1eb9p \u0111i\u1ec7n \u00e1p \u1edf m\u1ee9c \u0111\u00e1nh th\u1ee7ng c\u1ed9ng v\u1edbi \u0111i\u1ec7n tr\u1edf \u0111\u1ed9ng nh\u00e2n v\u1edbi d\u00f2ng \u0111i\u1ec7n xung.<\/p>\n<p>V\u1eadt l\u00fd l\u00e0 ho\u00e0n to\u00e0n tr\u1ea1ng th\u00e1i r\u1eafn, kh\u00f4ng c\u00f3 chuy\u1ec3n \u0111\u1ed9ng c\u01a1 h\u1ecdc, ion h\u00f3a kh\u00ed ho\u1eb7c thay \u0111\u1ed5i pha v\u1eadt li\u1ec7u. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p th\u1eddi gian ph\u1ea3n h\u1ed3i trong ph\u1ea1m vi nano gi\u00e2y\u2014d\u01b0\u1edbi 1 ns \u0111\u1ed1i v\u1edbi silicon tr\u1ea7n, m\u1eb7c d\u00f9 \u0111i\u1ec7n c\u1ea3m g\u00f3i th\u01b0\u1eddng \u0111\u1ea9y ph\u1ea3n h\u1ed3i hi\u1ec7u qu\u1ea3 l\u00ean 1-5 ns \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft b\u1ecb th\u1ef1c t\u1ebf. \u0110\u1eb7c t\u00ednh \u0111i\u1ec7n \u00e1p-d\u00f2ng \u0111i\u1ec7n r\u1ea5t d\u1ed1c (\u0111i\u1ec7n tr\u1edf \u0111\u1ed9ng th\u1ea5p), cung c\u1ea5p kh\u1ea3 n\u0103ng k\u1eb9p ch\u1eb7t ch\u1ebd.<\/p>\n<h3>\u5173\u952e\u53c2\u6570\u4e0e\u7279\u6027<\/h3>\n<p><strong>\u0110\u1ecbnh M\u1ee9c C\u00f4ng Su\u1ea5t Xung<\/strong>: C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t TVS ch\u1ec9 \u0111\u1ecbnh dung l\u01b0\u1ee3ng c\u00f4ng su\u1ea5t b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u0111\u1ed9 r\u1ed9ng xung ti\u00eau chu\u1ea9n (th\u01b0\u1eddng l\u00e0 d\u1ea1ng s\u00f3ng m\u0169 10\/1000 \u00b5s). C\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m ph\u1ed5 bi\u1ebfn cung c\u1ea5p \u0111\u1ecbnh m\u1ee9c xung 400W, 600W, 1500W ho\u1eb7c 5000W. Kh\u1ea3 n\u0103ng d\u00f2ng \u0111i\u1ec7n \u0111\u1ec9nh \u0111\u01b0\u1ee3c t\u00ednh t\u1eeb c\u00f4ng su\u1ea5t xung v\u00e0 \u0111i\u1ec7n \u00e1p k\u1eb9p\u2014m\u1ed9t thi\u1ebft b\u1ecb 600W v\u1edbi \u0111i\u1ec7n \u00e1p k\u1eb9p 15V x\u1eed l\u00fd kho\u1ea3ng 40A \u0111\u1ec9nh.<\/p>\n<p><strong>Hi\u1ec7u Su\u1ea5t K\u1eb9p<\/strong>: Diode TVS cung c\u1ea5p \u0111i\u1ec7n \u00e1p k\u1eb9p th\u1ea5p nh\u1ea5t so v\u1edbi b\u1ea5t k\u1ef3 c\u00f4ng ngh\u1ec7 b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t n\u00e0o. T\u1ef7 l\u1ec7 \u0111i\u1ec7n \u00e1p k\u1eb9p tr\u00ean \u0111i\u1ec7n \u00e1p ch\u1ecbu \u0111\u1ef1ng (V_C\/V_WM) th\u01b0\u1eddng l\u00e0 1,3 \u0111\u1ebfn 1,5, so v\u1edbi 2,0-2,5 \u0111\u1ed1i v\u1edbi MOV. Kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 b\u1ea3o v\u1ec7 logic 3,3V, USB 5V, m\u1ea1ch \u00f4 t\u00f4 12V v\u00e0 c\u00e1c t\u1ea3i nh\u1ea1y c\u1ea3m v\u1edbi \u0111i\u1ec7n \u00e1p kh\u00e1c.<\/p>\n<p><strong>\u7535\u5bb9<\/strong>: \u0110i\u1ec7n dung TVS thay \u0111\u1ed5i r\u1ed9ng r\u00e3i theo c\u1ea5u tr\u00fac thi\u1ebft b\u1ecb. C\u00e1c diode TVS ti\u1ebfp gi\u00e1p ti\u00eau chu\u1ea9n c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb h\u00e0ng tr\u0103m picofarad, g\u00e2y t\u1ea3i cho c\u00e1c \u0111\u01b0\u1eddng d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao. C\u00e1c d\u00f2ng TVS \u0111i\u1ec7n dung th\u1ea5p \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho HDMI, USB 3.0, Ethernet v\u00e0 RF s\u1eed d\u1ee5ng h\u00ecnh h\u1ecdc ti\u1ebfp gi\u00e1p chuy\u00ean d\u1ee5ng v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c d\u01b0\u1edbi 5 pF tr\u00ean m\u1ed7i \u0111\u01b0\u1eddng truy\u1ec1n.<\/p>\n<p><strong>L\u00e3o H\u00f3a v\u00e0 \u0110\u1ed9 Tin C\u1eady<\/strong>: Kh\u00f4ng gi\u1ed1ng nh\u01b0 MOV, diode TVS th\u1ec3 hi\u1ec7n s\u1ef1 tr\u00f4i hi\u1ec7u su\u1ea5t t\u1ed1i thi\u1ec3u d\u01b0\u1edbi \u1ee9ng su\u1ea5t xung \u0111\u1ecbnh m\u1ee9c. Ti\u1ebfp gi\u00e1p silicon kh\u00f4ng b\u1ecb suy gi\u1ea3m t\u00edch l\u0169y t\u1eeb c\u00e1c xung l\u1eb7p \u0111i l\u1eb7p l\u1ea1i trong \u0111\u1ecbnh m\u1ee9c. C\u00e1c ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c th\u01b0\u1eddng l\u00e0 h\u1edf m\u1ea1ch (ti\u00eau h\u1ee7y ti\u1ebfp gi\u00e1p) ho\u1eb7c ng\u1eafn m\u1ea1ch (n\u00f3ng ch\u1ea3y kim lo\u1ea1i h\u00f3a), c\u1ea3 hai \u0111\u1ec1u ch\u1ec9 x\u1ea3y ra d\u01b0\u1edbi t\u00ecnh tr\u1ea1ng qu\u00e1 t\u1ea3i c\u1ef1c \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 \u0111\u1ecbnh m\u1ee9c.<\/p>\n<p><strong>\u0110i\u1ec3n H\u00ecnh \u1ee8ng D\u1ee5ng<\/strong>: B\u1ea3o v\u1ec7 m\u1ea1ch c\u1ea5p bo m\u1ea1ch (c\u1ed5ng I\/O, \u0111\u01b0\u1eddng ray ngu\u1ed3n), giao di\u1ec7n USB v\u00e0 HDMI, \u0111i\u1ec7n t\u1eed \u00f4 t\u00f4, ngu\u1ed3n \u0111i\u1ec7n DC, \u0111\u01b0\u1eddng d\u00e2y d\u1eef li\u1ec7u truy\u1ec1n th\u00f4ng v\u00e0 b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o y\u00eau c\u1ea7u ph\u1ea3n h\u1ed3i nhanh v\u00e0 k\u1eb9p \u0111i\u1ec7n \u00e1p ch\u1eb7t ch\u1ebd cho t\u1ea3i b\u00e1n d\u1eabn.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/img.viox.com\/TVS-Diode-I-V-Characteristic-and-Clamping-Behavior.webp\" alt=\"TVS Diode I-V Characteristic and Clamping Behavior\" \/><\/figure>\n<p><em>H\u00ecnh 3: \u0110\u01b0\u1eddng cong \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n \u00e1p-d\u00f2ng \u0111i\u1ec7n (I-V) c\u1ee7a diode TVS cho th\u1ea5y ho\u1ea1t \u0111\u1ed9ng avalanche b\u00e1n d\u1eabn. \u1ede \u0111i\u1ec7n \u00e1p b\u00ecnh th\u01b0\u1eddng (v\u00f9ng ch\u1ecbu \u0111\u1ef1ng V_WM), thi\u1ebft b\u1ecb duy tr\u00ec tr\u1edf kh\u00e1ng cao v\u1edbi d\u00f2ng r\u00f2 nanoampe. Khi \u0111i\u1ec7n \u00e1p tho\u00e1ng qua v\u01b0\u1ee3t qu\u00e1 \u0111i\u1ec7n \u00e1p \u0111\u00e1nh th\u1ee7ng ng\u01b0\u1ee3c (V_BR), ti\u1ebfp gi\u00e1p P-N silicon \u0111i v\u00e0o tr\u1ea1ng th\u00e1i nh\u00e2n avalanche\u2014\u0111i\u1ec7n tr\u1edf ti\u1ebfp gi\u00e1p gi\u1ea3m xu\u1ed1ng v\u00e0 thi\u1ebft b\u1ecb k\u1eb9p \u0111i\u1ec7n \u00e1p \u1edf V_C (\u0111i\u1ec7n \u00e1p \u0111\u00e1nh th\u1ee7ng c\u1ed9ng v\u1edbi \u0111i\u1ec7n tr\u1edf \u0111\u1ed9ng \u00d7 d\u00f2ng \u0111i\u1ec7n xung). \u0110\u01b0\u1eddng cong d\u1ed1c (\u0111i\u1ec7n tr\u1edf \u0111\u1ed9ng th\u1ea5p) cung c\u1ea5p kh\u1ea3 n\u0103ng ki\u1ec3m so\u00e1t \u0111i\u1ec7n \u00e1p ch\u1eb7t ch\u1ebd, r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u1ea3i b\u00e1n d\u1eabn.<\/em><\/p>\n<h2>K\u1eb9p so v\u1edbi \u0110o\u1ea3n M\u1ea1ch: Hai Tri\u1ebft L\u00fd B\u1ea3o V\u1ec7<\/h2>\n<p>S\u1ef1 kh\u00e1c bi\u1ec7t c\u01a1 b\u1ea3n gi\u1eefa c\u00e1c c\u00f4ng ngh\u1ec7 n\u00e0y n\u1eb1m \u1edf tri\u1ebft l\u00fd b\u1ea3o v\u1ec7 c\u1ee7a ch\u00fang. MOV v\u00e0 diode TVS l\u00e0 <strong>thi\u1ebft b\u1ecb k\u1eb9p<\/strong>\u2014ch\u00fang gi\u1edbi h\u1ea1n \u0111i\u1ec7n \u00e1p \u1edf m\u1ed9t m\u1ee9c c\u1ee5 th\u1ec3 t\u1ef7 l\u1ec7 v\u1edbi d\u00f2ng \u0111i\u1ec7n xung. GDT l\u00e0 <strong>thi\u1ebft b\u1ecb \u0111o\u1ea3n m\u1ea1ch<\/strong>\u2014ch\u00fang t\u1ea1o ra m\u1ed9t m\u1ea1ch ng\u1eafn l\u00e0m gi\u1ea3m \u0111i\u1ec7n \u00e1p xu\u1ed1ng m\u1ee9c d\u01b0 th\u1ea5p b\u1ea5t k\u1ec3 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n.<\/p>\n<p><strong>H\u00e0nh vi k\u1eb9p<\/strong> (MOV v\u00e0 TVS): Khi d\u00f2ng \u0111i\u1ec7n xung t\u0103ng l\u00ean, \u0111i\u1ec7n \u00e1p k\u1eb9p t\u0103ng l\u00ean theo \u0111\u01b0\u1eddng cong V-I phi tuy\u1ebfn t\u00ednh c\u1ee7a thi\u1ebft b\u1ecb. M\u1ed9t MOV \u0111\u1ecbnh m\u1ee9c 275V RMS c\u00f3 th\u1ec3 k\u1eb9p \u1edf 750V \u0111\u1ed1i v\u1edbi xung 1 kA nh\u01b0ng t\u0103ng l\u00ean 900V \u1edf 5 kA. M\u1ed9t diode TVS \u0111\u1ecbnh m\u1ee9c ch\u1ecbu \u0111\u1ef1ng 15V c\u00f3 th\u1ec3 k\u1eb9p \u1edf 24V \u0111\u1ed1i v\u1edbi 10A nh\u01b0ng \u0111\u1ea1t 26V \u1edf 20A. T\u1ea3i \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 th\u1ea5y m\u1ed9t \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi bi\u00ean \u0111\u1ed9 xung v\u00e0 \u0111\u1eb7c t\u00ednh thi\u1ebft b\u1ecb.<\/p>\n<p><strong>H\u00e0nh vi \u0111o\u1ea3n m\u1ea1ch<\/strong> (GDT): Sau khi x\u1ea3y ra \u0111\u00e1nh th\u1ee7ng, GDT \u0111i v\u00e0o ch\u1ebf \u0111\u1ed9 h\u1ed3 quang v\u00e0 \u0111i\u1ec7n \u00e1p gi\u1ea3m xu\u1ed1ng 10-20V b\u1ea5t k\u1ec3 d\u00f2ng \u0111i\u1ec7n xung l\u00e0 100A hay 10.000A. \u0110i\u1ec1u n\u00e0y cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 tuy\u1ec7t v\u1eddi sau khi \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t, nh\u01b0ng tia l\u1eeda \u0111i\u1ec7n ban \u0111\u1ea7u c\u00f3 th\u1ec3 cho ph\u00e9p m\u1ed9t gai \u0111i\u1ec7n \u00e1p tr\u01b0\u1edbc khi qu\u00e1 tr\u00ecnh ion h\u00f3a ho\u00e0n t\u1ea5t. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c t\u1ea3i nh\u1ea1y c\u1ea3m ph\u00eda sau GDT th\u01b0\u1eddng c\u1ea7n m\u1ed9t k\u1eb9p nhanh th\u1ee9 c\u1ea5p.<\/p>\n<p>M\u1ed7i tri\u1ebft l\u00fd ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau. C\u00e1c thi\u1ebft b\u1ecb k\u1eb9p b\u1ea3o v\u1ec7 b\u1eb1ng c\u00e1ch gi\u1edbi h\u1ea1n m\u1ee9c \u0111i\u1ec7n \u00e1p. C\u00e1c thi\u1ebft b\u1ecb \u0111o\u1ea3n m\u1ea1ch b\u1ea3o v\u1ec7 b\u1eb1ng c\u00e1ch chuy\u1ec3n h\u01b0\u1edbng d\u00f2ng \u0111i\u1ec7n. K\u1eb9p ho\u1ea1t \u0111\u1ed9ng khi m\u1ea1ch \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p k\u1eb9p. \u0110o\u1ea3n m\u1ea1ch ho\u1ea1t \u0111\u1ed9ng khi ngu\u1ed3n xung c\u00f3 tr\u1edf kh\u00e1ng \u0111\u1ee7 cao \u0111\u1ec3 vi\u1ec7c \u0111o\u1ea3n m\u1ea1ch \u0111\u01b0\u1eddng d\u00e2y kh\u00f4ng l\u00e0m h\u1ecfng thi\u1ebft b\u1ecb ng\u01b0\u1ee3c d\u00f2ng ho\u1eb7c g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 d\u00f2ng \u0111i\u1ec7n theo sau.<\/p>\n<h2>MOV so v\u1edbi GDT so v\u1edbi TVS: So S\u00e1nh Song Song<\/h2>\n<p>B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ecbnh l\u01b0\u1ee3ng c\u00e1c kh\u00e1c bi\u1ec7t ch\u00ednh v\u1ec1 hi\u1ec7u su\u1ea5t gi\u1eefa ba c\u00f4ng ngh\u1ec7 b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t n\u00e0y:<\/p>\n<table>\n<tbody>\n<tr>\n<td><strong>Tham s\u1ed1<\/strong><\/td>\n<td><strong>MOV (Varistor Oxit Kim Lo\u1ea1i)<\/strong><\/td>\n<td><strong>GDT (\u1ed0ng Ph\u00f3ng \u0110i\u1ec7n Kh\u00ed)<\/strong><\/td>\n<td><strong>\u0110i\u1ed1t TVS<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>H\u00e0nh Nguy\u00ean T\u1eafc<\/strong><\/td>\n<td>\u0110i\u1ec7n tr\u1edf phi tuy\u1ebfn t\u00ednh ph\u1ee5 thu\u1ed9c \u0111i\u1ec7n \u00e1p (ranh gi\u1edbi h\u1ea1t ZnO)<\/td>\n<td>\u0110o\u1ea3n m\u1ea1ch ion h\u00f3a kh\u00ed<\/td>\n<td>\u0110\u00e1nh th\u1ee7ng avalanche b\u00e1n d\u1eabn<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u01a1 ch\u1ebf b\u1ea3o v\u1ec7<\/strong><\/td>\n<td>K\u1eb9p<\/td>\n<td>\u0110o\u1ea3n m\u1ea1ch<\/td>\n<td>K\u1eb9p<\/td>\n<\/tr>\n<tr>\n<td><strong>Ph\u1ea3n \u1ee8ng Th\u1eddi Gian<\/strong><\/td>\n<td>&lt;25 ns (c\u00e1c b\u1ed9 ph\u1eadn danh m\u1ee5c \u0111i\u1ec3n h\u00ecnh)<\/td>\n<td>100 ns \u2013 1 \u00b5s (ph\u1ee5 thu\u1ed9c \u0111i\u1ec7n \u00e1p)<\/td>\n<td>1-5 ns (gi\u1edbi h\u1ea1n b\u1edfi g\u00f3i)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110i\u1ec7n \u00c1p K\u1eb9p\/H\u1ed3 Quang<\/strong><\/td>\n<td>2,0-2,5 \u00d7 MCOV<\/td>\n<td>10-20 V (ch\u1ebf \u0111\u1ed9 h\u1ed3 quang)<\/td>\n<td>1,3-1,5 \u00d7 V_ch\u1ecbu \u0111\u1ef1ng<\/td>\n<\/tr>\n<tr>\n<td><strong>D\u00f2ng \u0110i\u1ec7n Xung (8\/20 \u00b5s)<\/strong><\/td>\n<td>400 A \u2013 100 kA (ph\u1ee5 thu\u1ed9c k\u00edch th\u01b0\u1edbc)<\/td>\n<td>5 kA \u2013 20 kA (c\u1ea5p vi\u1ec5n th\u00f4ng)<\/td>\n<td>10 A \u2013 200 A (d\u00f2ng 600W ~40A)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u80fd\u91cf\u8010\u53d7<\/strong><\/td>\n<td>Tuy\u1ec7t v\u1eddi (100-1000 J)<\/td>\n<td>Tuy\u1ec7t v\u1eddi (plasma ph\u00e2n t\u00e1n)<\/td>\n<td>V\u1eeba ph\u1ea3i (gi\u1edbi h\u1ea1n b\u1edfi ti\u1ebfp gi\u00e1p)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u7535\u5bb9<\/strong><\/td>\n<td>50-5000 pF (ph\u1ee5 thu\u1ed9c di\u1ec7n t\u00edch)<\/td>\n<td>&lt;2 pF<\/td>\n<td>5-500 pF (ph\u1ee5 thu\u1ed9c c\u1ea5u tr\u00fac)<\/td>\n<\/tr>\n<tr>\n<td><strong>H\u00e0nh Vi L\u00e3o H\u00f3a<\/strong><\/td>\n<td>Suy gi\u1ea3m theo chu k\u1ef3 xung; V_n tr\u00f4i xu\u1ed1ng<\/td>\n<td>\u1ed4n \u0111\u1ecbnh qua h\u00e0ng ng\u00e0n xung<\/td>\n<td>\u0110\u1ed9 tr\u00f4i t\u1ed1i thi\u1ec3u trong \u0111\u1ecbnh m\u1ee9c<\/td>\n<\/tr>\n<tr>\n<td><strong>Ch\u1ebf \u0110\u1ed9 H\u1ecfng H\u00f3c<\/strong><\/td>\n<td>Suy gi\u1ea3m \u2192 ng\u1eafn m\u1ea1ch ho\u1eb7c h\u1edf m\u1ea1ch<\/td>\n<td>Ng\u1eafn m\u1ea1ch (duy tr\u00ec h\u1ed3 quang)<\/td>\n<td>H\u1edf m\u1ea1ch ho\u1eb7c ng\u1eafn m\u1ea1ch (ch\u1ec9 g\u00e2y ra th\u1ea3m h\u1ecda)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u540e\u7eed\u7535\u6d41\u98ce\u9669<\/strong><\/td>\n<td>\u4f4e (\u81ea\u7184\u706d)<\/td>\n<td>\u9ad8 (\u9700\u8981\u5916\u90e8\u9650\u5236)<\/td>\n<td>\u65e0 (\u56fa\u6001)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u5178\u578b\u7535\u538b\u8303\u56f4<\/strong><\/td>\n<td>18V RMS \u2013 1000V RMS<\/td>\n<td>75V \u2013 5000V DC \u51fb\u7a7f\u7535\u538b<\/td>\n<td>3.3V \u2013 600V \u622a\u6b62\u7535\u538b<\/td>\n<\/tr>\n<tr>\n<td><strong>\u6210\u672c (\u76f8\u5bf9)<\/strong><\/td>\n<td>\u4f4e ($0.10 \u2013 $5)<\/td>\n<td>\u4e2d\u4f4e ($0.50 \u2013 $10)<\/td>\n<td>\u4e2d\u4f4e ($0.20 \u2013 $8)<\/td>\n<\/tr>\n<tr>\n<td><strong>Ti\u00eau chu\u1ea9n<\/strong><\/td>\n<td>IEC 61643-11, UL 1449<\/td>\n<td>ITU-T K.12, IEEE C62.31<\/td>\n<td>IEC 61643-11, UL 1449<\/td>\n<\/tr>\n<tr>\n<td><strong>Ch\u00ednh C\u00e1c \u1ee8ng D\u1ee5ng<\/strong><\/td>\n<td>\u4ea4\u6d41\u7535\u6e90\uff0c\u914d\u7535\uff0c\u5de5\u4e1a<\/td>\n<td>\u7535\u4fe1\u7ebf\u8def\uff0c\u9ad8\u901f\u6570\u636e\uff0c\u5929\u7ebf<\/td>\n<td>\u677f\u7ea7 I\/O\uff0c\u76f4\u6d41\u7535\u6e90\uff0c\u6c7d\u8f66<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u6bd4\u8f83\u7684\u4e3b\u8981\u7ed3\u8bba<\/h3>\n<p><strong>MOV<\/strong> \u5728\u80fd\u91cf\u5904\u7406\u3001\u5feb\u901f\u54cd\u5e94\u548c\u7535\u529b\u6d6a\u6d8c\u6210\u672c\u4e4b\u95f4\u63d0\u4f9b\u4e86\u6700\u4f73\u5e73\u8861\u3002\u5b83\u4eec\u5728\u4ea4\u6d41\u7535\u6e90\u4fdd\u62a4\u4e2d\u5360\u636e\u4e3b\u5bfc\u5730\u4f4d\uff0c\u4f46\u4f1a\u53d7\u5230\u9ad8\u9891\u7535\u8def\u4e0a\u7684\u7535\u5bb9\u8d1f\u8f7d\u4ee5\u53ca\u91cd\u590d\u5e94\u529b\u4e0b\u7684\u7d2f\u79ef\u8001\u5316\u5f71\u54cd\u3002.<\/p>\n<p><strong>GDT (\u6c14\u4f53\u653e\u7535\u7ba1)<\/strong> \u5728\u7ebf\u8def\u8d1f\u8f7d\u6700\u5c0f\u5316\u81f3\u5173\u91cd\u8981\u4e14\u6d6a\u6d8c\u7535\u6d41\u80fd\u529b\u5fc5\u987b\u6700\u5927\u5316\u7684\u60c5\u51b5\u4e0b\u8868\u73b0\u51fa\u8272\u3002\u5176\u8d85\u4f4e\u7535\u5bb9\u4f7f\u5176\u5728\u7535\u4fe1\u548c\u5c04\u9891\u5e94\u7528\u4e2d\u4e0d\u53ef\u66ff\u4ee3\uff0c\u4f46\u8f83\u6162\u7684\u54cd\u5e94\u548c\u540e\u7eed\u7535\u6d41\u98ce\u9669\u9700\u8981\u4ed4\u7ec6\u7684\u7535\u8def\u8bbe\u8ba1\u3002.<\/p>\n<p><strong>TVS \u4e8c\u6781\u7ba1 (\u77ac\u6001\u7535\u538b\u6291\u5236\u5668)<\/strong> \u4e3a\u654f\u611f\u7535\u5b50\u8bbe\u5907\u63d0\u4f9b\u6700\u5feb\u3001\u6700\u4e25\u683c\u7684\u94b3\u4f4d\u3002\u5b83\u4eec\u662f\u4fdd\u62a4\u4f4e\u4e8e 50V \u7535\u538b\u7684\u534a\u5bfc\u4f53 I\/O \u7684\u552f\u4e00\u5b9e\u7528\u9009\u62e9\uff0c\u4f46\u6709\u9650\u7684\u80fd\u91cf\u5bb9\u91cf\u610f\u5473\u7740\u5b83\u4eec\u65e0\u6cd5\u5904\u7406 MOVs \u548c GDTs \u5e38\u89c4\u5438\u6536\u7684\u96f7\u7535\u7ea7\u522b\u6d6a\u6d8c\u3002.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/img.viox.com\/MOV-vs-TVS-Comparison-Matrix-Technical-Specifications.webp\" alt=\"MOV vs TVS Comparison Matrix - Technical Specifications\" \/><\/figure>\n<p><em>\u56fe 4\uff1a\u4e13\u4e1a\u7684\u6bd4\u8f83\u56fe\u8868\uff0c\u5bf9\u6bd4\u4e86 MOV\uff08\u91d1\u5c5e\u6c27\u5316\u7269\u538b\u654f\u7535\u963b\uff09\u548c TVS\uff08\u77ac\u6001\u7535\u538b\u6291\u5236\u5668\uff09\u6280\u672f\u5728\u5173\u952e\u89c4\u683c\u65b9\u9762\u7684\u5dee\u5f02\u3002MOV \u5177\u6709\u66f4\u9ad8\u7684\u94b3\u4f4d\u7535\u538b\u6bd4\uff082.0-2.5\u00d7 MCOV\uff09\uff0c\u5177\u6709\u51fa\u8272\u7684\u80fd\u91cf\u5438\u6536\u80fd\u529b\uff0c\u9002\u7528\u4e8e\u7535\u529b\u6d6a\u6d8c\uff0c\u800c TVS \u4e8c\u6781\u7ba1\u63d0\u4f9b\u66f4\u4e25\u683c\u7684\u7535\u538b\u63a7\u5236\uff081.3-1.5\u00d7 \u622a\u6b62\u7535\u538b\uff09\uff0c\u5177\u6709\u66f4\u5feb\u7684\u54cd\u5e94\u901f\u5ea6\uff08&lt;5 ns\uff09\uff0c\u9002\u7528\u4e8e\u534a\u5bfc\u4f53\u4fdd\u62a4\u3002\u8be5\u8868\u5305\u62ec\u7535\u538b\u989d\u5b9a\u503c\u3001\u6d6a\u6d8c\u7535\u6d41\u80fd\u529b\u548c\u5178\u578b\u7684\u96f6\u4ef6\u7f16\u53f7\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u6bcf\u79cd\u6280\u672f\u7684\u4e92\u8865\u6027\u80fd\u8303\u56f4\u3002.<\/em><\/p>\n<h2>\u6280\u672f\u9009\u62e9\u6307\u5357\uff1a\u4f55\u65f6\u4f7f\u7528\u6bcf\u79cd\u6280\u672f<\/h2>\n<p>\u9009\u62e9\u6b63\u786e\u7684\u6d6a\u6d8c\u4fdd\u62a4\u6280\u672f\u53d6\u51b3\u4e8e\u5c06\u8bbe\u5907\u7279\u6027\u4e0e\u7535\u8def\u8981\u6c42\u76f8\u5339\u914d\u3002\u8fd9\u662f\u4e00\u4e2a\u51b3\u7b56\u6846\u67b6\uff1a<\/p>\n<h3>\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u4f7f\u7528 MOV\uff1a<\/h3>\n<ul class=\"bulleted-list\">\n<li><strong>\u7535\u8def\u7535\u538b\u4e3a\u4ea4\u6d41\u7535\u6e90\u6216\u9ad8\u538b\u76f4\u6d41\uff08&gt;50V\uff09<\/strong>\uff1aMOV \u7684\u7535\u538b\u989d\u5b9a\u503c\u8303\u56f4\u4e3a 18V RMS \u81f3 1000V \u4ee5\u4e0a\uff0c\u5b8c\u7f8e\u5339\u914d\u4f4f\u5b85\uff08120\/240V\uff09\u3001\u5546\u4e1a\uff08277\/480V\uff09\u548c\u5de5\u4e1a\u914d\u7535\u3002.<\/li>\n<li><strong>\u6d6a\u6d8c\u80fd\u91cf\u5f88\u9ad8<\/strong>\uff1a\u96f7\u7535\u5f15\u8d77\u7684\u6d6a\u6d8c\u3001\u516c\u7528\u8bbe\u65bd\u5207\u6362\u77ac\u53d8\u548c\u7535\u673a\u542f\u52a8\u4f1a\u4ea7\u751f\u53ea\u6709 MOV \u624d\u80fd\u7ecf\u6d4e\u5730\u5438\u6536\u7684\u80fd\u91cf\u6c34\u5e73\uff08\u6570\u767e\u5230\u6570\u5343\u7126\u8033\uff09\u3002.<\/li>\n<li><strong>\u54cd\u5e94\u65f6\u95f4 &lt;25 ns \u662f\u53ef\u63a5\u53d7\u7684<\/strong>\uff1a\u5927\u591a\u6570\u7535\u529b\u7535\u5b50\u8bbe\u5907\u548c\u5de5\u4e1a\u8bbe\u5907\u90fd\u80fd\u5bb9\u5fcd MOV \u7684\u54cd\u5e94\u901f\u5ea6\u3002.<\/li>\n<li><strong>\u7535\u5bb9\u8d1f\u8f7d\u662f\u53ef\u4ee5\u63a5\u53d7\u7684<\/strong>\uff1a\u5728\u7535\u6e90\u9891\u7387\uff0850\/60 Hz\uff09\u4e0b\uff0c\u5373\u4f7f 1000 pF \u7684\u7535\u5bb9\u4e5f\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u3002.<\/li>\n<li><strong>\u6210\u672c\u53d7\u5230\u9650\u5236<\/strong>\uff1aMOV \u63d0\u4f9b\u6bcf\u7126\u8033\u4fdd\u62a4\u7684\u6700\u4f4e\u6210\u672c\u3002.<\/li>\n<\/ul>\n<p><strong>\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u907f\u514d\u4f7f\u7528 MOV\uff1a<\/strong> \u4fdd\u62a4\u9ad8\u901f\u901a\u4fe1\u7ebf\u8def\uff08\u7535\u5bb9\u8d1f\u8f7d\uff09\u3001\u4f4e\u538b\u534a\u5bfc\u4f53\u7535\u8def\uff08\u94b3\u4f4d\u7535\u538b\u8fc7\u9ad8\uff09\u6216\u9700\u8981\u4fdd\u8bc1\u6570\u5341\u5e74\u5185\u65e0\u6f02\u79fb\u6027\u80fd\u7684\u5e94\u7528\uff08\u8001\u5316\u95ee\u9898\uff09\u3002.<\/p>\n<h3>\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u4f7f\u7528 GDT\uff1a<\/h3>\n<ul class=\"bulleted-list\">\n<li><strong>\u7ebf\u8def\u8d1f\u8f7d\u5fc5\u987b\u6700\u5c0f\uff08&lt;2 pF\uff09<\/strong>\uff1axDSL \u8c03\u5236\u89e3\u8c03\u5668\u3001\u6709\u7ebf\u5bbd\u5e26\u3001\u5343\u5146\u4ee5\u592a\u7f51\u3001\u5c04\u9891\u63a5\u6536\u5668\u548c\u5929\u7ebf\u8f93\u5165\u65e0\u6cd5\u5bb9\u5fcd MOV \u6216\u6807\u51c6 TVS \u8bbe\u5907\u7684\u7535\u5bb9\u3002.<\/li>\n<li><strong>\u6d6a\u6d8c\u7535\u6d41\u80fd\u529b\u5fc5\u987b\u6700\u5927\u5316<\/strong>\uff1a\u7535\u4fe1\u4e2d\u5fc3\u5c40\u3001\u8702\u7a9d\u5854\u548c\u5ba4\u5916\u88c5\u7f6e\u9762\u4e34\u91cd\u590d\u7684\u9ad8\u632f\u5e45\u96f7\u7535\u6d6a\u6d8c\uff0c\u8fd9\u4e9b\u6d6a\u6d8c\u8d85\u8fc7\u4e86 TVS \u7684\u989d\u5b9a\u503c\u3002.<\/li>\n<li><strong>\u53d7\u4fdd\u62a4\u7684\u7535\u8def\u5177\u6709\u9ad8\u6e90\u963b\u6297<\/strong>\uff1a\u7535\u8bdd\u7ebf\uff08600\u03a9\uff09\u3001\u5929\u7ebf\u9988\u7ebf\uff0850-75\u03a9\uff09\u548c\u6570\u636e\u7535\u7f06\u53ef\u4ee5\u5b89\u5168\u5730\u88ab\u77ed\u8def\uff0c\u800c\u4e0d\u4f1a\u4ea7\u751f\u8fc7\u591a\u7684\u540e\u7eed\u7535\u6d41\u3002.<\/li>\n<li><strong>\u5de5\u4f5c\u7535\u538b\u5f88\u9ad8\uff08&gt;100V\uff09<\/strong>\uff1aGDT \u7684\u51fb\u7a7f\u7535\u538b\u8303\u56f4\u4e3a 75V \u81f3 5000V\uff0c\u6db5\u76d6\u7535\u4fe1\u7535\u538b\u3001PoE\uff08\u4ee5\u592a\u7f51\u4f9b\u7535\uff09\u548c\u9ad8\u538b\u4fe1\u53f7\u3002.<\/li>\n<\/ul>\n<p><strong>\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u907f\u514d\u4f7f\u7528 GDT\uff1a<\/strong> \u4fdd\u62a4\u4f4e\u963b\u6297\u76f4\u6d41\u7535\u6e90\uff08\u540e\u7eed\u7535\u6d41\u98ce\u9669\uff09\u3001\u9700\u8981\u6700\u5feb\u54cd\u5e94\u7684\u7535\u8def\uff08&lt;100 ns \u81f3\u5173\u91cd\u8981\uff09\u6216\u65e0\u6cd5\u5bb9\u5fcd\u521d\u59cb\u51fb\u7a7f\u5c16\u5cf0\u7684\u7535\u538b\u654f\u611f\u8d1f\u8f7d\uff08\u9700\u8981\u4e8c\u6b21\u94b3\u4f4d\uff09\u3002.<\/p>\n<h3>\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u4f7f\u7528 TVS \u4e8c\u6781\u7ba1\uff1a<\/h3>\n<ul class=\"bulleted-list\">\n<li><strong>\u94b3\u4f4d\u7535\u538b\u5fc5\u987b\u53d7\u5230\u4e25\u683c\u63a7\u5236<\/strong>\uff1a3.3V \u903b\u8f91\u30015V USB\u300112V \u6c7d\u8f66\u7535\u8def\u548c\u5176\u4ed6\u534a\u5bfc\u4f53\u8d1f\u8f7d\u9700\u8981\u5728\u6807\u79f0\u7535\u538b\u7684 20-30% \u8303\u56f4\u5185\u8fdb\u884c\u94b3\u4f4d\u2014\u2014\u53ea\u6709 TVS \u4e8c\u6781\u7ba1\u624d\u80fd\u5b9e\u73b0\u8fd9\u4e00\u70b9\u3002.<\/li>\n<li><strong>\u54cd\u5e94\u65f6\u95f4\u5fc5\u987b\u6700\u5feb\uff08&lt;5 ns\uff09<\/strong>\uff1a\u4fdd\u62a4\u9ad8\u901f\u5904\u7406\u5668\u3001FPGA \u548c\u654f\u611f\u6a21\u62df\u7535\u8def\u9700\u8981\u7eb3\u79d2\u7ea7\u54cd\u5e94\u3002.<\/li>\n<li><strong>\u7535\u8def\u7535\u538b\u4e3a\u4f4e\u5230\u4e2d\u7b49\uff08&lt;100V\uff09<\/strong>\uff1aTVS \u7cfb\u5217\u6db5\u76d6\u4ece 3.3V \u6570\u636e\u7ebf\u5230 48V \u7535\u4fe1\u7535\u6e90\u7684\u6240\u6709\u5185\u5bb9\u3002.<\/li>\n<li><strong>\u4e0d\u80fd\u5bb9\u5fcd\u8001\u5316\/\u6f02\u79fb<\/strong>\uff1a\u533b\u7597\u8bbe\u5907\u3001\u822a\u7a7a\u822a\u5929\u548c\u5b89\u5168\u5173\u952e\u7cfb\u7edf\u9700\u8981\u5728\u4ea7\u54c1\u5bff\u547d\u5185\u63d0\u4f9b\u53ef\u9884\u6d4b\u7684\u3001\u7a33\u5b9a\u7684\u4fdd\u62a4\u3002.<\/li>\n<li><strong>\u677f\u7a7a\u95f4\u6709\u9650<\/strong>\uff1a0402 \u6216 SOT-23 \u5c01\u88c5\u4e2d\u7684 SMT TVS \u8bbe\u5907\u9002\u5408 MOV \u548c GDT \u65e0\u6cd5\u5b89\u88c5\u7684\u5730\u65b9\u3002.<\/li>\n<\/ul>\n<p><strong>\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u907f\u514d\u4f7f\u7528 TVS \u4e8c\u6781\u7ba1\uff1a<\/strong> \u6d6a\u6d8c\u80fd\u91cf\u8d85\u8fc7\u8109\u51b2\u529f\u7387\u989d\u5b9a\u503c\uff08\u5178\u578b\u7684 600W \u8bbe\u5907\u4ec5\u5438\u6536\u7ea6 1 \u7126\u8033\uff09\uff0c\u6d6a\u6d8c\u7535\u6d41\u8d85\u8fc7\u5cf0\u503c\u989d\u5b9a\u503c\uff08\u5728 15V \u65f6\uff0c600W \u7684\u5178\u578b\u503c\u4e3a 40A\uff09\uff0c\u6216\u8005\u5728\u591a\u7ebf\u8def\u7cfb\u7edf\u4e2d\u6bcf\u4e2a\u901a\u9053\u7684\u6210\u672c\u53d8\u5f97\u8fc7\u9ad8\u3002.<\/p>\n<h3>Ma tr\u1eadn quy\u1ebft \u0111\u1ecbnh<\/h3>\n<table>\n<tbody>\n<tr>\n<td><strong>\u1ee8ng d\u1ee5ng<\/strong><\/td>\n<td><strong>C\u00f4ng ngh\u1ec7 ch\u00ednh<\/strong><\/td>\n<td><strong>C\u01a1 s\u1edf l\u00fd lu\u1eadn<\/strong><\/td>\n<\/tr>\n<tr>\n<td>B\u1ea3o v\u1ec7 b\u1ea3ng \u0111i\u1ec7n AC<\/td>\n<td>MOV (SPD Lo\u1ea1i 1\/2)<\/td>\n<td>N\u0103ng l\u01b0\u1ee3ng cao, 120-480V, hi\u1ec7u qu\u1ea3 chi ph\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Giao di\u1ec7n \u0111\u01b0\u1eddng d\u00e2y vi\u1ec5n th\u00f4ng<\/td>\n<td>GDT + TVS (ph\u00e2n t\u1ea7ng)<\/td>\n<td>GDT h\u1ea5p th\u1ee5 n\u0103ng l\u01b0\u1ee3ng, TVS k\u1eb9p \u0111i\u1ec7n \u00e1p d\u01b0<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u01b0\u1eddng truy\u1ec1n d\u1eef li\u1ec7u USB 2.0 \/ 3.0<\/td>\n<td>TVS \u0111i\u1ec7n dung th\u1ea5p<\/td>\n<td>C\u1ea1nh xung nhanh, ngu\u1ed3n 5V, y\u00eau c\u1ea7u &lt;5 pF<\/td>\n<\/tr>\n<tr>\n<td>Ethernet (10\/100\/1000 Base-T)<\/td>\n<td>GDT (ch\u00ednh) + TVS \u0111i\u1ec7n dung th\u1ea5p<\/td>\n<td>T\u1ea3i t\u1ed1i thi\u1ec3u, kh\u1ea3 n\u0103ng ch\u1ecbu xung cao<\/td>\n<\/tr>\n<tr>\n<td>I\/O c\u00f4ng nghi\u1ec7p 24V DC<\/td>\n<td>TVS<\/td>\n<td>K\u1eb9p ch\u1eb7t, ph\u1ea3n h\u1ed3i nhanh, kh\u00f4ng l\u00e3o h\u00f3a<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u v\u00e0o DC n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi PV<\/td>\n<td>MOV (\u0111\u1ecbnh m\u1ee9c DC)<\/td>\n<td>\u0110i\u1ec7n \u00e1p cao (600-1000V), n\u0103ng l\u01b0\u1ee3ng cao<\/td>\n<\/tr>\n<tr>\n<td>M\u1ea1ch 12V \u00f4 t\u00f4<\/td>\n<td>TVS<\/td>\n<td>B\u1ea3o v\u1ec7 ch\u1ed1ng qu\u00e1 t\u1ea3i, k\u1eb9p ch\u1eb7t \u1edf 24-36V<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ea7u v\u00e0o \u0103ng-ten RF<\/td>\n<td>B\u1ec7nh GDT<\/td>\n<td>D\u01b0\u1edbi 2 pF, kh\u1ea3 n\u0103ng x\u1eed l\u00fd c\u00f4ng su\u1ea5t cao<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u01b0\u1eddng ray ngu\u1ed3n 3.3V FPGA<\/td>\n<td>TVS (\u0111i\u1ec7n dung th\u1ea5p)<\/td>\n<td>K\u1eb9p 6-8V, ph\u1ea3n h\u1ed3i &lt;1 ns l\u00e0 r\u1ea5t quan tr\u1ecdng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Ma tr\u1eadn n\u00e0y l\u00e0 m\u1ed9t \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u. C\u00e1c c\u00e0i \u0111\u1eb7t ph\u1ee9c t\u1ea1p th\u01b0\u1eddng k\u1ebft h\u1ee3p c\u00e1c c\u00f4ng ngh\u1ec7 trong c\u00e1c s\u01a1 \u0111\u1ed3 b\u1ea3o v\u1ec7 ph\u00e2n l\u1edbp, t\u1eadn d\u1ee5ng c\u00e1c \u0111i\u1ec3m m\u1ea1nh c\u1ee7a t\u1eebng giai \u0111o\u1ea1n.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/img.viox.com\/Three-Stage-Layered-Surge-Protection-Architecture.webp\" alt=\"Three-Stage Layered Surge Protection Architecture\" \/><\/figure>\n<p><em>H\u00ecnh 5: S\u01a1 \u0111\u1ed3 ki\u1ebfn tr\u00fac b\u1ea3o v\u1ec7 ch\u1ed1ng xung \u0111i\u1ec7n ba giai \u0111o\u1ea1n chuy\u00ean nghi\u1ec7p minh h\u1ecda chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o v\u1ec7 ph\u1ed1i h\u1ee3p. Giai \u0111o\u1ea1n 1 (Ch\u00ednh): SPD MOV Lo\u1ea1i 1 t\u1ea1i \u0111\u1ea7u v\u00e0o d\u1ecbch v\u1ee5 x\u1eed l\u00fd n\u0103ng l\u01b0\u1ee3ng xung c\u1ef1c l\u1edbn (40-100 kA) v\u00e0 k\u1eb9p \u0111i\u1ec7n \u00e1p t\u1eeb 10+ kV xu\u1ed1ng ~600V. Giai \u0111o\u1ea1n 2 (Th\u1ee9 c\u1ea5p): \u1ed0ng ph\u00f3ng \u0111i\u1ec7n kh\u00ed (GDT) chuy\u1ec3n h\u01b0\u1edbng c\u00e1c qu\u00e1 \u0111\u1ed9 \u0111i\u1ec7n \u00e1p cao d\u01b0 v\u00e0 gi\u1ea3m \u0111i\u1ec7n \u00e1p xu\u1ed1ng ~30V th\u00f4ng qua ho\u1ea1t \u0111\u1ed9ng \u1edf ch\u1ebf \u0111\u1ed9 h\u1ed3 quang. Giai \u0111o\u1ea1n 3 (Cu\u1ed1i c\u00f9ng): Diode TVS cung c\u1ea5p kh\u1ea3 n\u0103ng k\u1eb9p ch\u1eb7t (&lt;1,5 l\u1ea7n \u0111i\u1ec7n \u00e1p ch\u1ecbu \u0111\u1ef1ng) v\u1edbi ph\u1ea3n h\u1ed3i nano gi\u00e2y \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c t\u1ea3i b\u00e1n d\u1eabn nh\u1ea1y c\u1ea3m. M\u1ed7i giai \u0111o\u1ea1n c\u00f3 n\u1ed1i \u0111\u1ea5t v\u00e0 ph\u1ed1i h\u1ee3p \u0111i\u1ec7n \u00e1p th\u00edch h\u1ee3p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00e1c thi\u1ebft b\u1ecb th\u01b0\u1ee3ng ngu\u1ed3n k\u00edch ho\u1ea1t tr\u01b0\u1edbc c\u00e1c th\u00e0nh ph\u1ea7n h\u1ea1 ngu\u1ed3n, t\u1ea1o ra c\u00e1c \u0111i\u1ec3m \u201cb\u00e0n giao\u201d r\u00f5 r\u00e0ng \u0111\u1ec3 ph\u00e2n ph\u1ed1i n\u0103ng l\u01b0\u1ee3ng xung \u0111i\u1ec7n tr\u00ean to\u00e0n b\u1ed9 t\u1ea7ng b\u1ea3o v\u1ec7. C\u00e1ch ti\u1ebfp c\u1eadn ph\u00e2n l\u1edbp n\u00e0y t\u1eadn d\u1ee5ng c\u00e1c \u0111i\u1ec3m m\u1ea1nh b\u1ed5 sung c\u1ee7a c\u00e1c c\u00f4ng ngh\u1ec7 MOV (n\u0103ng l\u01b0\u1ee3ng cao), GDT (\u0111i\u1ec7n dung th\u1ea5p) v\u00e0 TVS (k\u1eb9p ch\u1eb7t).<\/em><\/p>\n<h2>B\u1ea3o v\u1ec7 ph\u00e2n l\u1edbp: K\u1ebft h\u1ee3p c\u00e1c c\u00f4ng ngh\u1ec7<\/h2>\n<p>C\u00e1c ki\u1ebfn tr\u00fac b\u1ea3o v\u1ec7 ch\u1ed1ng xung \u0111i\u1ec7n m\u1ea1nh m\u1ebd nh\u1ea5t kh\u00f4ng d\u1ef1a v\u00e0o m\u1ed9t c\u00f4ng ngh\u1ec7 duy nh\u1ea5t. Thay v\u00e0o \u0111\u00f3, ch\u00fang ph\u1ed1i h\u1ee3p nhi\u1ec1u giai \u0111o\u1ea1n, m\u1ed7i giai \u0111o\u1ea1n \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho m\u1ed9t ph\u1ea7n kh\u00e1c nhau c\u1ee7a ph\u1ed5 nguy c\u01a1. C\u00e1ch ti\u1ebfp c\u1eadn \u201cph\u00f2ng th\u1ee7 chi\u1ec1u s\u00e2u\u201d n\u00e0y t\u1eadn d\u1ee5ng c\u00e1c \u0111i\u1ec3m m\u1ea1nh b\u1ed5 sung c\u1ee7a c\u00e1c c\u00f4ng ngh\u1ec7 MOV, GDT v\u00e0 TVS.<\/p>\n<h3>T\u1ea1i sao c\u1ea7n b\u1ea3o v\u1ec7 ph\u00e2n l\u1edbp?<\/h3>\n<p><strong>Ph\u00e2n ph\u1ed1i n\u0103ng l\u01b0\u1ee3ng<\/strong>: M\u1ed9t diode TVS duy nh\u1ea5t kh\u00f4ng th\u1ec3 h\u1ea5p th\u1ee5 xung s\u00e9t 10 kA, nh\u01b0ng m\u1ed9t GDT \u1edf th\u01b0\u1ee3ng ngu\u1ed3n c\u00f3 th\u1ec3 chuy\u1ec3n h\u01b0\u1edbng 99% n\u0103ng l\u01b0\u1ee3ng \u0111\u00f3, \u0111\u1ec3 TVS k\u1eb9p \u0111i\u1ec7n \u00e1p d\u01b0. M\u1ed7i giai \u0111o\u1ea1n x\u1eed l\u00fd nh\u1eefng g\u00ec n\u00f3 l\u00e0m t\u1ed1t nh\u1ea5t.<\/p>\n<p><strong>T\u1ed1i \u01b0u h\u00f3a t\u1ed1c \u0111\u1ed9<\/strong>: GDT m\u1ea5t h\u00e0ng tr\u0103m nano gi\u00e2y \u0111\u1ec3 ion h\u00f3a. Trong th\u1eddi gian \u0111\u00f3, m\u1ed9t TVS nhanh \u1edf h\u1ea1 ngu\u1ed3n c\u00f3 th\u1ec3 k\u1eb9p xung ban \u0111\u1ea7u, ng\u0103n ng\u1eeba thi\u1ec7t h\u1ea1i cho c\u00e1c t\u1ea3i nh\u1ea1y c\u1ea3m. Khi GDT k\u00edch ho\u1ea1t, n\u00f3 s\u1ebd \u0111\u1ea3m nh\u1eadn vi\u1ec7c chuy\u1ec3n h\u01b0\u1edbng d\u00f2ng \u0111i\u1ec7n l\u1edbn.<\/p>\n<p><strong>Ph\u1ed1i h\u1ee3p \u0111i\u1ec7n \u00e1p<\/strong>: Thi\u1ebft b\u1ecb th\u01b0\u1ee3ng ngu\u1ed3n ph\u1ea3i \u0111\u00e1nh th\u1ee7ng tr\u01b0\u1edbc thi\u1ebft b\u1ecb h\u1ea1 ngu\u1ed3n. L\u1ef1a ch\u1ecdn th\u00edch h\u1ee3p \u0111\u1ea3m b\u1ea3o giai \u0111o\u1ea1n \u0111\u1ea7u ti\u00ean d\u1eabn \u0111i\u1ec7n \u1edf, ch\u1eb3ng h\u1ea1n, 600V, gi\u1edbi h\u1ea1n nh\u1eefng g\u00ec \u0111\u1ebfn giai \u0111o\u1ea1n th\u1ee9 hai (\u0111\u1ecbnh m\u1ee9c 150V), t\u1eeb \u0111\u00f3 b\u1ea3o v\u1ec7 t\u1ea3i cu\u1ed1i c\u00f9ng (\u0111\u1ecbnh m\u1ee9c 50V).<\/p>\n<h3>C\u00e1c ki\u1ebfn tr\u00fac ph\u00e2n l\u1edbp ph\u1ed5 bi\u1ebfn<\/h3>\n<p><strong>Giao di\u1ec7n vi\u1ec5n th\u00f4ng (GDT + TVS)<\/strong>:<\/p>\n<ul class=\"bulleted-list\">\n<li><strong>Giai \u0111o\u1ea1n ch\u00ednh<\/strong>: GDT t\u1ea1i ranh gi\u1edbi giao di\u1ec7n x\u1eed l\u00fd c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng tr\u1ef1c ti\u1ebfp c\u1ee7a s\u00e9t v\u00e0 c\u00e1c s\u1ef1 c\u1ed1 ngu\u1ed3n \u0111i\u1ec7n \u00e1p cao (xung 2-10 kV, l\u00ean \u0111\u1ebfn 20 kA).<\/li>\n<li><strong>Giai \u0111o\u1ea1n th\u1ee9 c\u1ea5p<\/strong>: Diode TVS \u0111i\u1ec7n dung th\u1ea5p k\u1eb9p c\u00e1c qu\u00e1 \u0111\u1ed9 d\u01b0 \u0111\u1ebfn m\u1ee9c an to\u00e0n cho IC b\u1ed9 thu ph\u00e1t (&lt;30V).<\/li>\n<li><strong>Ph\u1ed1i h\u1ee3p<\/strong>: GDT \u0111\u00e1nh l\u1eeda \u1edf 400V, TVS \u0111\u00e1nh th\u1ee7ng \u1edf 15V, \u0111\u1ecbnh m\u1ee9c t\u1ed1i \u0111a c\u1ee7a b\u1ed9 thu ph\u00e1t l\u00e0 12V. TVS b\u1ea3o v\u1ec7 trong th\u1eddi gian tr\u1ec5 ion h\u00f3a c\u1ee7a GDT; khi GDT k\u00edch ho\u1ea1t, n\u00f3 s\u1ebd \u0111\u1ea3m nh\u1eadn nhi\u1ec7m v\u1ee5 d\u00f2ng \u0111i\u1ec7n l\u1edbn.<\/li>\n<\/ul>\n<p><strong>Ethernet PoE (GDT + TVS + Cu\u1ed9n c\u1ea3m)<\/strong>:<\/p>\n<ul class=\"bulleted-list\">\n<li><strong>Ch\u00ednh<\/strong>: GDT chuy\u1ec3n h\u01b0\u1edbng c\u00e1c xung s\u00e9t t\u1eeb \u0111\u01b0\u1eddng d\u00e2y xu\u1ed1ng \u0111\u1ea5t.<\/li>\n<li><strong>Cu\u1ed9n c\u1ea3m n\u1ed1i ti\u1ebfp<\/strong>: L\u00e0m ch\u1eadm th\u1eddi gian t\u0103ng xung (dV\/dt), cho GDT th\u1eddi gian \u0111\u1ec3 ion h\u00f3a v\u00e0 gi\u1edbi h\u1ea1n d\u00f2ng \u0111i\u1ec7n v\u00e0o c\u00e1c giai \u0111o\u1ea1n h\u1ea1 ngu\u1ed3n.<\/li>\n<li><strong>Th\u1ee9 c\u1ea5p<\/strong>: Diode TVS tr\u00ean m\u1ed7i c\u1eb7p vi sai k\u1eb9p c\u00e1c qu\u00e1 \u0111\u1ed9 ch\u1ebf \u0111\u1ed9 chung v\u00e0 ch\u1ebf \u0111\u1ed9 vi sai \u0111\u1ec3 b\u1ea3o v\u1ec7 Ethernet PHY (t\u1ed1i \u0111a \u00b18V).<\/li>\n<\/ul>\n<p><strong>B\u1ea3ng \u0111i\u1ec7n AC c\u00f4ng nghi\u1ec7p (MOV ch\u00ednh + MOV th\u1ee9 c\u1ea5p)<\/strong>:<\/p>\n<ul class=\"bulleted-list\">\n<li><strong>L\u1ed1i v\u00e0o d\u1ecbch v\u1ee5<\/strong>: MOV Lo\u1ea1i 1 \u0111\u1ecbnh m\u1ee9c 40-100 kA x\u1eed l\u00fd s\u00e9t tr\u1ef1c ti\u1ebfp (\u0111i\u1ec7n \u00e1p 1,2\/50 \u00b5s, d\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n 10\/350 \u00b5s theo IEC 61643-11).<\/li>\n<li><strong>B\u1ea3ng ph\u00e2n ph\u1ed1i<\/strong>: MOV Lo\u1ea1i 2 \u0111\u1ecbnh m\u1ee9c 20-40 kA k\u1eb9p c\u00e1c xung d\u01b0 truy\u1ec1n qua h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n c\u1ee7a t\u00f2a nh\u00e0.<\/li>\n<li><strong>Thi\u1ebft b\u1ecb t\u1ea3i<\/strong>: SPD Lo\u1ea1i 3 ho\u1eb7c TVS c\u1ea5p bo m\u1ea1ch cung c\u1ea5p b\u1ea3o v\u1ec7 \u0111i\u1ec3m s\u1eed d\u1ee5ng cu\u1ed1i c\u00f9ng.<\/li>\n<\/ul>\n<p><strong>H\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi PV (MOV DC + TVS)<\/strong>:<\/p>\n<ul class=\"bulleted-list\">\n<li><strong>H\u1ed9p n\u1ed1i m\u1ea3ng<\/strong>: MOV \u0111\u1ecbnh m\u1ee9c DC (600-1000V) tr\u00ean \u0111\u1ea7u ra chu\u1ed7i PV x\u1eed l\u00fd c\u00e1c xung do s\u00e9t g\u00e2y ra.<\/li>\n<li><strong>\u0110\u1ea7u v\u00e0o bi\u1ebfn t\u1ea7n<\/strong>: Diode TVS b\u1ea3o v\u1ec7 b\u1ed9 chuy\u1ec3n \u0111\u1ed5i DC-DC v\u00e0 c\u00e1c ch\u1ea5t b\u00e1n d\u1eabn b\u1ed9 \u0111i\u1ec1u khi\u1ec3n MPPT, k\u1eb9p \u1edf c\u00e1c m\u1ee9c m\u00e0 silicon c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c.<\/li>\n<\/ul>\n<p>\u0110\u1ec3 ph\u1ed1i h\u1ee3p th\u00e0nh c\u00f4ng, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ch\u1ecdn \u0111i\u1ec7n \u00e1p \u0111\u00e1nh th\u1ee7ng t\u1ea1o ra c\u00e1c \u0111i\u1ec3m \u201cchuy\u1ec3n giao\u201d r\u00f5 r\u00e0ng v\u00e0 x\u00e1c minh r\u1eb1ng n\u0103ng l\u01b0\u1ee3ng th\u00f4ng qua t\u1eeb giai \u0111o\u1ea1n n\u00e0y v\u1eabn n\u1eb1m trong \u0111\u1ecbnh m\u1ee9c c\u1ee7a giai \u0111o\u1ea1n ti\u1ebfp theo. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t h\u1ec7 th\u1ed1ng SPD ho\u00e0n ch\u1ec9nh (nh\u01b0 VIOX) th\u01b0\u1eddng c\u00f4ng b\u1ed1 c\u00e1c c\u1ee5m l\u1eafp r\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m tra, ph\u1ed1i h\u1ee3p, gi\u00fap lo\u1ea1i b\u1ecf s\u1ef1 ph\u1ee9c t\u1ea1p trong thi\u1ebft k\u1ebf n\u00e0y.<\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c th\u00e0nh ph\u1ea7n b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t kh\u00f4ng ph\u1ea3i l\u00e0 t\u00ecm ki\u1ebfm c\u00f4ng ngh\u1ec7 \u201ct\u1ed1t nh\u1ea5t\u201d m\u00e0 l\u00e0 k\u1ebft h\u1ee3p v\u1eadt l\u00fd v\u1edbi c\u00e1c y\u00eau c\u1ea7u. MOVs t\u1eadn d\u1ee5ng g\u1ed1m oxit k\u1ebdm \u0111\u1ec3 h\u1ea5p th\u1ee5 n\u0103ng l\u01b0\u1ee3ng cao \u1edf \u0111i\u1ec7n \u00e1p ngu\u1ed3n. GDT khai th\u00e1c qu\u00e1 tr\u00ecnh ion h\u00f3a kh\u00ed \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ea3i \u0111\u01b0\u1eddng d\u00e2y t\u1ed1i thi\u1ec3u v\u1edbi kh\u1ea3 n\u0103ng d\u00f2ng \u0111i\u1ec7n t\u1ed1i \u0111a. Diode TVS khai th\u00e1c th\u00e1c tuy\u1ebft l\u1edf b\u00e1n d\u1eabn \u0111\u1ec3 k\u1eb9p nhanh nh\u1ea5t v\u00e0 ch\u1eb7t ch\u1ebd nh\u1ea5t c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed nh\u1ea1y c\u1ea3m.<\/p>\n<p>M\u1ed7i c\u00f4ng ngh\u1ec7 \u0111\u1ea1i di\u1ec7n cho m\u1ed9t s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i c\u01a1 b\u1ea3n:<\/p>\n<ul class=\"bulleted-list\">\n<li>MOVs \u0111\u00e1nh \u0111\u1ed5i \u0111i\u1ec7n \u00e1p k\u1eb9p cao h\u01a1n v\u00e0 s\u1ef1 l\u00e3o h\u00f3a \u0111\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd n\u0103ng l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed tuy\u1ec7t v\u1eddi.<\/li>\n<li>GDT \u0111\u00e1nh \u0111\u1ed5i ph\u1ea3n h\u1ed3i ch\u1eadm h\u01a1n v\u00e0 nguy c\u01a1 d\u00f2ng \u0111i\u1ec7n theo sau \u0111\u1ec3 c\u00f3 \u0111i\u1ec7n dung c\u1ef1c th\u1ea5p v\u00e0 \u0111\u1ed9 b\u1ec1n xung.<\/li>\n<li>Diode TVS \u0111\u00e1nh \u0111\u1ed5i dung l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng h\u1ea1n ch\u1ebf \u0111\u1ec3 c\u00f3 ph\u1ea3n h\u1ed3i nhanh nh\u1ea5t v\u00e0 ki\u1ec3m so\u00e1t \u0111i\u1ec7n \u00e1p ch\u1eb7t ch\u1ebd nh\u1ea5t.<\/li>\n<\/ul>\n<p>Hi\u1ec3u \u0111\u01b0\u1ee3c nh\u1eefng s\u1ef1 \u0111\u00e1nh \u0111\u1ed5i n\u00e0y\u2014b\u1eaft ngu\u1ed3n t\u1eeb c\u00e1c nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng m\u00e0 ch\u00fang ta \u0111\u00e3 xem x\u00e9t\u2014cho ph\u00e9p b\u1ea1n ch\u1ec9 \u0111\u1ecbnh kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 th\u1ef1c s\u1ef1 ho\u1ea1t \u0111\u1ed9ng trong \u1ee9ng d\u1ee5ng c\u1ee7a m\u00ecnh. M\u1ed9t MOV 600V tr\u00ean \u0111\u01b0\u1eddng d\u1eef li\u1ec7u 5V s\u1ebd kh\u00f4ng b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c. M\u1ed9t diode TVS 40A \u0111\u1ed1i m\u1eb7t v\u1edbi xung s\u00e9t 10 kA s\u1ebd h\u1ecfng th\u1ea3m h\u1ea1i. M\u1ed9t GDT tr\u00ean ngu\u1ed3n \u0111i\u1ec7n DC tr\u1edf kh\u00e1ng th\u1ea5p c\u00f3 th\u1ec3 kh\u00f3a v\u00e0o d\u1eabn \u0111i\u1ec7n d\u00f2ng \u0111i\u1ec7n theo sau g\u00e2y ph\u00e1 h\u1ee7y.<\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c c\u00e0i \u0111\u1eb7t ph\u1ee9c t\u1ea1p, b\u1ea3o v\u1ec7 nhi\u1ec1u l\u1edbp ph\u1ed1i h\u1ee3p nhi\u1ec1u c\u00f4ng ngh\u1ec7, \u0111\u1ecbnh v\u1ecb t\u1eebng c\u00f4ng ngh\u1ec7 \u1edf n\u01a1i n\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t. GDT h\u1ea5p th\u1ee5 n\u0103ng l\u01b0\u1ee3ng l\u1edbn, MOV x\u1eed l\u00fd c\u00e1c xung \u0111i\u1ec7n \u1edf m\u1ee9c c\u00f4ng su\u1ea5t v\u00e0 TVS cung c\u1ea5p kh\u1ea3 n\u0103ng k\u1eb9p giai \u0111o\u1ea1n cu\u1ed1i cho t\u1ea3i b\u00e1n d\u1eabn.<\/p>\n<p>Cho d\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf SPD ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c 100 kA theo IEC 61643-11, b\u1ea3o v\u1ec7 giao di\u1ec7n Gigabit Ethernet v\u1edbi t\u1ea3i d\u01b0\u1edbi 2 pF hay b\u1ea3o v\u1ec7 I\/O FPGA 3,3V, th\u00ec khu\u00f4n kh\u1ed5 quy\u1ebft \u0111\u1ecbnh v\u1eabn gi\u1ed1ng nhau: k\u1ebft h\u1ee3p v\u1eadt l\u00fd thi\u1ebft b\u1ecb v\u1edbi c\u00e1c y\u00eau c\u1ea7u c\u1ee7a m\u1ea1ch, x\u00e1c minh \u0111\u1ecbnh m\u1ee9c so v\u1edbi d\u1ea1ng s\u00f3ng \u0111e d\u1ecda v\u00e0 ph\u1ed1i h\u1ee3p c\u00e1c giai \u0111o\u1ea1n khi m\u1ed9t c\u00f4ng ngh\u1ec7 duy nh\u1ea5t kh\u00f4ng th\u1ec3 bao ph\u1ee7 to\u00e0n b\u1ed9 ph\u1ed5.<\/p>\n<hr \/>\n<p><strong>Gi\u1edbi thi\u1ec7u v\u1ec1 VIOX Electric<\/strong>: L\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng \u0111\u1ea7u v\u1ec1 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t lan truy\u1ec1n, VIOX cung c\u1ea5p c\u00e1c gi\u1ea3i ph\u00e1p MOV, GDT v\u00e0 TVS to\u00e0n di\u1ec7n cho c\u00e1c \u1ee9ng d\u1ee5ng d\u00e2n d\u1ee5ng, th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p. \u0110\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i cung c\u1ea5p h\u1ed7 tr\u1ee3 \u1ee9ng d\u1ee5ng cho c\u00e1c h\u1ec7 th\u1ed1ng b\u1ea3o v\u1ec7 ph\u1ed1i h\u1ee3p. Truy c\u1eadp <a href=\"https:\/\/test.viox.com\/vi\/\">www.viox.com<\/a> ho\u1eb7c li\u00ean h\u1ec7 v\u1edbi \u0111\u1ed9i ng\u0169 b\u00e1n h\u00e0ng k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 v\u1ec1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Introduction When specifying surge protection for electrical systems, engineers face a fundamental choice among three core technologies: Metal Oxide Varistor (MOV), Gas Discharge Tube (GDT), and Transient Voltage Suppressor (TVS) diode. Each technology offers distinct performance characteristics rooted in different physical principles\u2014MOVs harness nonlinear ceramic resistance, GDTs exploit gas ionization, and TVS diodes leverage semiconductor [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":20517,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-20516","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20516","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/comments?post=20516"}],"version-history":[{"count":1,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20516\/revisions"}],"predecessor-version":[{"id":20518,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/20516\/revisions\/20518"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/20517"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=20516"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=20516"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=20516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}