{"id":30315,"date":"2026-07-06T09:00:28","date_gmt":"2026-07-06T01:00:28","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=30315"},"modified":"2026-07-06T09:50:43","modified_gmt":"2026-07-06T01:50:43","slug":"pn%e7%bb%93%ef%bc%88pn-junction%ef%bc%89%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/diodes\/27631","title":{"rendered":"PN\u7ed3\uff08PN 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src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/01-basic-pn-junction-structure.png\" alt=\"PN\u7ed3\u7684\u57fa\u672c\u7ed3\u6784\" width=\"700\" height=\"394\" \/><\/p>\n<h2 id=\"toc1\">p\u578b\u534a\u5bfc\u4f53\u548cn\u578b\u534a\u5bfc\u4f53\u57fa\u7840<\/h2>\n<p>\u5728\u534a\u5bfc\u4f53\u6750\u6599\u4e2d\uff0c\u901a\u8fc7\u5411\u7845\u6216\u9517\u7b49\u5143\u7d20\u4e2d\u6dfb\u52a0\u6742\u8d28\uff08\u63ba\u6742\uff09\uff0c\u53ef\u4ee5\u663e\u8457\u6539\u53d8\u5176\u7535\u6c14\u6027\u8d28\u3002\u8981\u7406\u89e3PN\u7ed3\uff0c\u9700\u8981\u5148\u638c\u63e1p\u578b\u548cn\u578b\u5404\u81ea\u7684\u7279\u70b9\u3002<\/p>\n<h3 id=\"toc2\">p\u578b\u534a\u5bfc\u4f53\u7684\u7279\u70b9<\/h3>\n<p>p\u578b\u534a\u5bfc\u4f53\u5177\u6709\u4ee5\u7a7a\u7a74\u4f5c\u4e3a\u591a\u6570\u8f7d\u6d41\u5b50\u8fdb\u884c\u5bfc\u7535\u7684\u7279\u6027\u3002\u5177\u4f53\u800c\u8a00\uff0c\u5c31\u662f\u5728\u7845\u7b49\u56db\u4ef7\u5143\u7d20\u534a\u5bfc\u4f53\u4e2d\u63ba\u5165\u4e09\u4ef7\u5143\u7d20\uff08\u5982\u787c\uff09\u65f6\uff0c\u4f1a\u5728\u4ef7\u5e26\u4e2d\u4ea7\u751f\u7535\u5b50\u7f3a\u5931\uff0c\u8fd9\u4fbf\u8d77\u5230\u7a7a\u7a74\u7684\u4f5c\u7528\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/02-silicon-crystal-structure-p-type.png\" alt=\"p\u578b\u534a\u5bfc\u4f53\u7684\u7845\u6676\u4f53\u7ed3\u6784\" width=\"700\" height=\"394\" \/><\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u901a\u8fc7\u63ba\u5165\u6742\u8d28\u4f7f\u7a7a\u7a74\u6210\u4e3a\u591a\u6570\u8f7d\u6d41\u5b50<\/strong><br 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\/>\n\u5728\u7845\u4e2d\u63ba\u6742\u787c\u7684p\u578b\u534a\u5bfc\u4f53\uff0c\u4e3b\u8981\u4f9d\u9760\u7a7a\u7a74\u8fdb\u884c\u5bfc\u7535\u3002\u4e0e\u7535\u5b50\u8fc1\u79fb\u7387\u76f8\u6bd4\uff0c\u7a7a\u7a74\u8fc1\u79fb\u7387\u8f83\u5c0f\uff0c\u56e0\u6b64\u540c\u7b49\u63ba\u6742\u6d53\u5ea6\u7684p\u578b\u534a\u5bfc\u4f53\u7684\u7535\u5bfc\u7387\u901a\u5e38\u7565\u4f4e\u4e8en\u578b\u534a\u5bfc\u4f53\u3002<\/li>\n<\/ul>\n<p>\u7406\u89e3\u8fd9\u4e9b\u6027\u8d28\uff0c\u6709\u52a9\u4e8e\u66f4\u76f4\u89c2\u5730\u7406\u89e3\u540e\u7eed\u5c06\u8981\u6d89\u53ca\u7684PN\u7ed3\u5185\u90e8\u7684\u7a7a\u7a74\u8fd0\u52a8\u3002<\/p>\n<h3 id=\"toc3\">n\u578b\u534a\u5bfc\u4f53\u7684\u7279\u70b9<\/h3>\n<p>n\u578b\u534a\u5bfc\u4f53\u4e2d\uff0c\u7535\u5b50\u4f5c\u4e3a\u591a\u6570\u8f7d\u6d41\u5b50\u53d1\u6325\u4f5c\u7528\u3002\u5178\u578b\u65b9\u6cd5\u662f\u901a\u8fc7\u5411\u7845\u4e2d\u63ba\u5165\u4e94\u4ef7\u5143\u7d20\uff08\u5982\u78f7\u3001\u7837\u7b49\uff09\uff0c\u589e\u52a0\u81ea\u7531\u7535\u5b50\u7684\u6570\u91cf\uff0c\u4ece\u800c\u63d0\u9ad8\u7535\u5bfc\u7387\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/03-silicon-crystal-structure-n-type.png\" alt=\"N\u578b\u7845\u534a\u5bfc\u4f53\u7684\u6676\u4f53\u7ed3\u6784\" width=\"700\" height=\"394\" \/><\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u901a\u8fc7\u63ba\u5165\u6742\u8d28\u4f7f\u7535\u5b50\u6210\u4e3a\u591a\u6570\u8f7d\u6d41\u5b50<\/strong><br \/>\n\u7531\u4e8e\u4e94\u4ef7\u5143\u7d20\u591a\u4e00\u4e2a\u4ef7\u7535\u5b50\uff0c\u5728\u53c2\u4e0e\u534a\u5bfc\u4f53\u6676\u4f53\u7684\u5171\u4ef7\u952e\u5408\u540e\uff0c\u4ecd\u4f1a\u52691\u4e2a\u591a\u4f59\u7684\u7535\u5b50\u3002\u7531\u4e8e\u8fd9\u4e2a\u7535\u5b50\u53ef\u4ee5\u4f5c\u4e3a\u81ea\u7531\u7535\u5b50\u79fb\u52a8\uff0c\u56e0\u6b64n\u578b\u534a\u5bfc\u4f53\u5177\u6709\u8d1f\u7535\u8377\u8f7d\u6d41\u5b50\u5360\u591a\u6570\u7684\u6027\u8d28\u3002<\/li>\n<li><strong>n\u578b\u6750\u6599\u5178\u578b\u793a\u4f8b\u53ca\u7535\u5b50\u8fc1\u79fb\u7387\u6982\u8ff0\u7b49<\/strong><br \/>\n\u5728\u7845\u4e2d\u6dfb\u52a0\u78f7\u65f6\uff0c\u952e\u5408\u540e\u5269\u4f59\u7684\u7535\u5b50\u53d8\u5f97\u53ef\u4ee5\u81ea\u7531\u79fb\u52a8\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u7535\u5b50\u7684\u8fc1\u79fb\u7387\u9ad8\u4e8e\u7a7a\u7a74\uff0c\u56e0\u6b64\u5373\u4f7f\u5728\u76f8\u540c\u7684\u63ba\u6742\u6d53\u5ea6\u4e0b\uff0cn \u578b\u534a\u5bfc\u4f53\u4e5f\u6bd4 p \u578b\u534a\u5bfc\u4f53\u5bb9\u6613\u83b7\u5f97\u66f4\u9ad8\u7684\u7535\u5bfc\u7387\u3002<\/li>\n<\/ul>\n<p>\u63d0\u9ad8\u6742\u8d28\u6d53\u5ea6\u4f1a\u4f7f\u5f97\u8f7d\u6d41\u5b50\u6d53\u5ea6\u589e\u52a0\uff0c\u7535\u5bfc\u7387\u901a\u5e38\u4e5f\u4f1a\u968f\u4e4b\u63d0\u9ad8\u3002\u7136\u800c\uff0c\u5f53\u6d53\u5ea6\u8fc7\u9ad8\u65f6\uff0c\u8f7d\u6d41\u5b50\u7684\u79fb\u52a8\u53d7\u963b\uff0c\u4f1a\u5bfc\u81f4\u7535\u5bfc\u7387\u7684\u6539\u5584\u6548\u679c\u51cf\u5f31\u3002\u56e0\u6b64\uff0c\u5728\u5b9e\u9645\u751f\u4ea7\u5236\u9020\u4e2d\uff0c\u5408\u9002\u7684\u6d53\u5ea6\u5e73\u8861\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h2 id=\"toc4\">PN\u7ed3\u7684\u5f62\u6210\u4e0e\u8017\u5c3d\u5c42<\/h2>\n<p>PN\u7ed3\u662f\u6307\u5728\u5355\u4e2a\u534a\u5bfc\u4f53\u6676\u4f53\u5185\uff0cp\u578b\u533a\u4e0en\u578b\u533a\u76f8\u4e92\u63a5\u89e6\u5f62\u6210\u7684\u7ed3\u6784\u3002\u5728\u8be5\u63a5\u89e6\u754c\u9762\u9644\u8fd1\uff0c\u7535\u5b50\u548c\u7a7a\u7a74\u901a\u8fc7\u6269\u6563\u4e0e\u590d\u5408\uff0c\u5f62\u6210\u79f0\u4e3a\u201c\u8017\u5c3d\u5c42\u201d\u7684\u8f7d\u6d41\u5b50\u7a00\u5c11\u533a\u57df\uff0c\u5e76\u4ea7\u751f\u5185\u5efa\u7535\u52bf\u3002\u8fd9\u4e00\u7279\u6027\u4fbf\u662f\u4e8c\u6781\u7ba1\u548c\u6676\u4f53\u7ba1\u7b49\u7535\u5b50\u5143\u5668\u4ef6\u5de5\u4f5c\u539f\u7406\u7684\u57fa\u7840\u3002<\/p>\n<h3 id=\"toc5\">PN\u7ed3\u7684\u5f62\u6210\u673a\u5236<\/h3>\n<p>\u5f53p\u578b\u548cn\u578b\u5728\u540c\u4e00\u5757\u6676\u7247\u4e0a\u63a5\u89e6\u65f6\uff0c\u5728\u4ea4\u754c\u9762\u9644\u8fd1\u591a\u6570\u8f7d\u6d41\u5b50\u4f1a\u76f8\u4e92\u6269\u6563\u3002p\u578b\u4fa7\u7684\u7a7a\u7a74\u4f1a\u5411n\u578b\u4fa7\u6269\u6563\uff0cn\u578b\u4fa7\u7684\u7535\u5b50\u5219\u4f1a\u5411p\u578b\u4fa7\u6269\u6563\uff0c\u4ece\u800c\u5728\u4ea4\u754c\u9762\u9644\u8fd1\u53d1\u751f\u590d\u5408\u73b0\u8c61\u3002<\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>p\u578b\u548cn\u578b\u5728\u540c\u4e00\u5757\u6676\u7247\u4e0a\u7684\u63a5\u89e6\uff08\u7ed3\uff09<\/strong><br \/>\n\u5728\u5b9e\u9645\u5236\u9020\u8fc7\u7a0b\u4e2d\uff0c\u901a\u5e38\u91c7\u7528\u5728\u6676\u5706\u4e0a\u65bd\u4ee5\u63ba\u6742\u5de5\u827a\uff0c\u4ece\u800c\u5c40\u90e8\u5f62\u6210p\u578b\u548cn\u578b\u533a\u57df\u7684\u6280\u672f\u6765\u5b9e\u73b0\u7684\u3002\u5229\u7528\u8fd9\u79cd\u6280\u672f\uff0c\u53ef\u4ee5\u5728\u540c\u4e00\u5757\u6676\u5706\u886c\u5e95\u4e0a\u5236\u9020\u51fap\u578b\u533a\u57df\u548cn\u578b\u533a\u57df\u7d27\u5bc6\u90bb\u63a5\u7684\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/04-semiconductor-manufacturing-process.png\" alt=\"\u534a\u5bfc\u4f53\u5236\u9020\u6d41\u7a0b\uff08\u793a\u610f\u56fe\uff09\" width=\"700\" height=\"394\" \/><\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u5728\u4ea4\u754c\u9762\u9644\u8fd1\u53d1\u751f\u7684\u8f7d\u6d41\u5b50\u6269\u6563\u4e0e\u590d\u5408<\/strong><br \/>\n\u5728\u521d\u671f\u9636\u6bb5\uff0cp\u4fa7\u7684\u7a7a\u7a74\u4e0en\u4fa7\u7684\u7535\u5b50\u4f1a\u4e92\u76f8\u4ea4\u7ec7\u5e76\u5411\u5bf9\u65b9\u533a\u57df\u6269\u6563\u3002\u4f46\u662f\uff0c\u5728\u79fb\u52a8\u7684\u8f7d\u6d41\u5b50\u4e4b\u95f4\u4f1a\u53d1\u751f\u590d\u5408\uff0c\u5bfc\u81f4\u8fb9\u754c\u9644\u8fd1\u533a\u57df\u51e0\u4e4e\u6ca1\u6709\u5269\u4f59\u7684\u8f7d\u6d41\u5b50\uff0c\u4ece\u800c\u5f62\u6210\u6240\u8c13\u7684\u201c\u8017\u5c3d\u201d\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/05-diffusion-recombination-at-pn-junction.png\" alt=\"PN\u7ed3\u4e2d\u7684\u6269\u6563\u4e0e\u590d\u5408\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u901a\u8fc7\u8fd9\u4e00\u8fc7\u7a0b\u5f62\u6210\u7684\u8017\u5c3d\u5c42\uff0c\u51b3\u5b9a\u4e86PN\u7ed3\u7684\u57fa\u672c\u7ed3\u6784\u3002<\/p>\n<h3 id=\"toc6\">\u8017\u5c3d\u5c42\u4e0e\u5185\u5efa\u7535\u52bf<\/h3>\n<p>\u5f53p\u578b\u4e0en\u578b\u533a\u57df\u63a5\u89e6\u5f62\u6210\u8017\u5c3d\u5c42\u65f6\uff0c\u4f1a\u4f7f\u5f97p\u4fa7\u548cn\u4fa7\u7535\u79bb\u540e\u7684\u6742\u8d28\u66b4\u9732\u51fa\u6765\u3002\u5728p\u578b\u4fa7\uff0c\u7559\u4e0b\u4e86\u5e26\u8d1f\u7535\u7684\u53d7\u4e3b\uff1b\u800c\u5728n\u578b\u4fa7\uff0c\u5219\u7559\u4e0b\u4e86\u5e26\u6b63\u7535\u7684\u65bd\u4e3b\uff0c\u4ece\u5728\u4e24\u8005\u7684\u4ea4\u754c\u5904\u4f1a\u4ea7\u751f\u7535\u573a\u3002<\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u8017\u5c3d\u5c42\uff08depletion region\uff09\u7684\u5f62\u6210<\/strong><br \/>\n\u53ef\u79fb\u52a8\u8f7d\u6d41\u5b50\u7a00\u5c11\u7684\u533a\u57df\u88ab\u79f0\u4e3a\u201c\u8017\u5c3d\u5c42\u201d\u3002\u8017\u5c3d\u5c42\u4e2d\u51e0\u4e4e\u6ca1\u6709\u6709\u6548\u7684\u8f7d\u6d41\u5b50\u5b58\u5728\uff0c\u4f46\u7535\u79bb\u540e\u6742\u8d28\u7684\u56fa\u5b9a\u7535\u8377\u4ecd\u7136\u5b58\u5728\uff0c\u8fd9\u6210\u4e3a\u4ea7\u751f\u5185\u90e8\u7535\u573a\u7684\u6839\u6e90\u3002<\/li>\n<li><strong>\u5185\u5efa\u7535\u52bf\uff08\u7ea60.6\uff5e0.7V\uff09\u5f15\u8d77\u7684\u8f7d\u6d41\u5b50\u79fb\u52a8\u963b\u788d<\/strong><br \/>\n\u4ee5\u7845\u6750\u6599\u4e3a\u4f8b\uff0c\u5728\u5ba4\u6e29\u4e0b\u4f1a\u4ea7\u751f\u7ea60.\uff5e0.7V\u7684\u5185\u5efa\u7535\u52bf\u5dee\u3002\u5728\u8fd9\u79cd\u5185\u5efa\u7535\u52bf\u7684\u4f5c\u7528\u4e0b\uff0c\u6765\u81eap\u4fa7\u548cn\u4fa7\u7684\u8f7d\u6d41\u5b50\u5c06\u65e0\u6cd5\u8f7b\u6613\u5411\u5bf9\u65b9\u533a\u57df\u79fb\u52a8\u3002\u7ed3\u679c\u4fbf\u662f\uff0c\u9664\u975e\u4ece\u5916\u90e8\u65bd\u52a0\u80fd\u91cf\uff08\u7535\u52bf\u5dee\uff09\uff0c\u5426\u5219\u5c06\u5904\u4e8e\u65e0\u6cd5\u6d41\u8fc7\u5927\u7535\u6d41\u7684\u72b6\u6001\u3002<\/li>\n<\/ul>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/06-depletion-layer-formation.png\" alt=\"\u8017\u5c3d\u5c42\u7684\u5f62\u6210\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u5185\u5efa\u7535\u52bf\u5728PN\u7ed3\u5904\u4e8e\u65e0\u7535\u6e90\u72b6\u6001\u65f6\u4e5f\u4f1a\u81ea\u53d1\u4ea7\u751f\uff0c\u4ece\u800c\u9650\u5236\u7535\u8377\u7684\u79fb\u52a8\u3002\u8fd9\u4e00\u7279\u6027\u6b63\u662f\u4e8c\u6781\u7ba1\u7b49\u5668\u4ef6\u5b9e\u73b0\u5355\u5411\u5bfc\u7535\u6027\u7684\u57fa\u7840\u3002<\/p>\n<h2 id=\"toc7\">PN\u7ed3\u4e8c\u6781\u7ba1\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u5411PN\u7ed3\u65bd\u52a0\u7535\u538b\u4f1a\u6539\u53d8\u8017\u5c3d\u5c42\u7684\u539a\u5ea6\u548c\u5185\u5efa\u7535\u52bf\u7684\u6709\u6548\u503c\uff0c\u4ece\u800c\u4f7f\u7535\u6d41\u7684\u6d41\u52a8\u65b9\u5f0f\u4e5f\u53d1\u751f\u663e\u8457\u53d8\u5316\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u5bf9\u4e8c\u6781\u7ba1\u7684\u6b63\u5411\u504f\u7f6e\u548c\u53cd\u5411\u504f\u7f6e\u8fdb\u884c\u8bb2\u89e3\u3002<\/p>\n<h3 id=\"toc8\">\u6b63\u5411\u504f\u7f6e\u548c\u53cd\u5411\u504f\u7f6e<\/h3>\n<p>\u4ece\u5916\u90e8\u5c06\u7535\u6e90\u8fde\u63a5\u81f3PN\u7ed3\uff0c\u4f7fp\u4fa7\u63a5\u6b63\u6781\u3001n\u4fa7\u63a5\u8d1f\u6781\u7684\u72b6\u6001\uff0c\u79f0\u4e3a\u201c\u6b63\u5411\u504f\u7f6e\u201d\u3002\u8fd9\u65f6\u8017\u5c3d\u5c42\u53d8\u7a84\uff0c\u7535\u6d41\u76f8\u5bf9\u5bb9\u6613\u6d41\u8fc7\u3002<\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u6b63\u5411\u504f\u7f6e\u65f6\uff1a\u8017\u5c3d\u5c42\u53d8\u7a84\uff0c\u7535\u6d41\u6613\u4e8e\u6d41\u8fc7<\/strong><br \/>\n\u5f53\u5411p\u4fa7\u65bd\u52a0\u6b63\u7535\u4f4d\u3001\u5411n\u4fa7\u65bd\u52a0\u8d1f\u7535\u4f4d\u65f6\uff0c\u4f1a\u524a\u5f31\u5185\u5efa\u7535\u52bf\uff0c\u4ece\u800c\u4f7f\u8f7d\u6d41\u5b50\u66f4\u5bb9\u6613\u8de8\u8d8a\u52bf\u5792\u3002\u5f53\u5916\u52a0\u7535\u538b\u8d85\u8fc7\u5185\u5efa\u7535\u52bf\u65f6\uff0c\u5c06\u5f00\u59cb\u6d41\u8fc7\u5927\u7535\u6d41\u3002<\/li>\n<\/ul>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/07-forward-bias-applied-to-pn-junction.png\" alt=\"PN\u7ed3\u5728\u65bd\u52a0\u6b63\u5411\u504f\u538b\u65f6\u7684\u5de5\u4f5c\" width=\"700\" height=\"394\" \/><\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u53cd\u5411\u504f\u7f6e\u65f6\uff1a\u8017\u5c3d\u5c42\u53d8\u5bbd\uff0c\u7535\u6d41\u975e\u5e38\u5c0f\uff08\u4ec5\u9650\u4e8e\u6f0f\u7535\u6d41\uff09<\/strong><br \/>\n\u5f53\u5411p\u4fa7\u65bd\u52a0\u8d1f\u7535\u4f4d\u3001\u5411n\u4fa7\u65bd\u52a0\u6b63\u7535\u4f4d\u65f6\uff0c\u5185\u5efa\u7535\u52bf\u8fdb\u4e00\u6b65\u589e\u5f3a\uff0c\u5bfc\u81f4\u8f7d\u6d41\u5b50\u66f4\u52a0\u96be\u4ee5\u79fb\u52a8\u3002\u7ed3\u679c\u662f\u53cd\u5411\u7535\u6d41\u4ec5\u7ef4\u6301\u5728\u5fae\u5f31\u7684\u6f0f\u7535\u6d41\u7a0b\u5ea6\uff0c\u5176\u6570\u503c\u4e4b\u5c0f\uff0c\u5728\u6b63\u5e38\u5de5\u4f5c\u4e2d\u51e0\u4e4e\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u3002<\/li>\n<\/ul>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/08-reverse-bias-applied-to-pn-junction.png\" alt=\"PN\u7ed3\u5728\u65bd\u52a0\u53cd\u5411\u504f\u538b\u65f6\u7684\u5de5\u4f5c\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u5229\u7528\u8fd9\u4e00\u7279\u6027\uff0c\u4e8c\u6781\u7ba1\u53ef\u7528\u4e8e\u4ea4\u6d41\u6ce2\u5f62\u6574\u6d41\uff08AC\u2192DC\u8f6c\u6362\uff09\u6216\u5f00\u5173\u5de5\u4f5c\u3002<\/p>\n<h3 id=\"toc9\">\u7535\u6d41\u7279\u6027\u4e0e\u8096\u514b\u5229\u65b9\u7a0b<\/h3>\n<p>\u8fde\u63a5PN\u7ed3\u4e8c\u6781\u7ba1\u7684\u7535\u6d41-\u7535\u538b\u7279\u6027\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u201c\u8096\u514b\u5229\u65b9\u7a0b\u201d\u8fd1\u4f3c\u8868\u793a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(I=I_0\\begin{pmatrix} e^{qV\/kT}-1\\end{pmatrix}\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c<\/p>\n<ul class=\"unordered-list\">\n<li>\\(I\\)\u662f\u6d41\u7ecf\u4e8c\u6781\u7ba1\u7684\u7535\u6d41<\/li>\n<li>\\(I_0\\)\u662f\u53cd\u5411\u9971\u548c\u7535\u6d41\uff08\u6570\u503c\u975e\u5e38\u5c0f\uff09<\/li>\n<li>\\(q\\)\u662f\u5143\u7535\u8377\uff08\u7ea61.602\u00d710<sup>\u221219<\/sup>\u5e93\u4ed1\uff09<\/li>\n<li>\\(V\\)\u662f\u65bd\u52a0\u5728\u4e8c\u6781\u7ba1\u4e0a\u7684\u7535\u538b<\/li>\n<li>\\(k\\)\u662f\u73bb\u5c14\u5179\u66fc\u5e38\u6570\uff08\u7ea61.38\u00d710<sup>\u221223<\/sup>J\/K\uff09<\/li>\n<li>\\(T\\)\u662f\u7edd\u5bf9\u6e29\u5ea6\uff08K\uff09<\/li>\n<\/ul>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/09-voltage-current-characteristic-of-diode.png\" alt=\"\u4e8c\u6781\u7ba1\u7684\u7535\u6d41-\u7535\u538b\u7279\u6027\" width=\"700\" height=\"394\" \/><\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u8096\u514b\u5229\u65b9\u7a0b\u63a8\u5bfc\u6982\u8ff0<\/strong><\/li>\n<\/ul>\n<p>\u8bbep\u578b\u4fa7\u4e2d\u7684\u201c\u5c11\u6570\u8f7d\u6d41\u5b50\u7535\u5b50\u201d\u6d53\u5ea6\u4e3a\\(n_p (x)\\)\uff0c\u8bben\u578b\u4fa7\u4e2d\u7684\u201c\u5c11\u6570\u8f7d\u6d41\u5b50\u7a7a\u7a74\u201d\u6d53\u5ea6\u4e3a\\(p_n (x)\\)\u3002\u5728\u7a33\u6001\u3001\u4e00\u7ef4\u3001\u5c0f\u6ce8\u5165\u7b49\u6761\u4ef6\u4e0b\uff0cp\u578b\u4fa7\u7684\u5c11\u6570\u8f7d\u6d41\u5b50\u7535\u5b50\u6ee1\u8db3\u4ee5\u4e0b\u6269\u6563\u65b9\u7a0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(D_n\\displaystyle\\frac{d^2\u0394n_p (x)}{dx^2}-\\displaystyle\\frac{\u0394n_p(x)}{\u03c4_n}=0\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c\\(\u0394n_p\\)\u4e3ap\u578b\u533a\u4e2d\u7684\u7535\u5b50\u6d53\u5ea6\uff0c\\(D_n\\)\u4e3a\u7535\u5b50\u7684\u6269\u6563\u7cfb\u6570\u3001\\(\u03c4_n\\)\u4e3a\u7535\u5b50\u4ece\u4ea7\u751f\u5230\u53d1\u751f\u590d\u5408\u800c\u6d88\u5931\u524d\u7684\u5e73\u5747\u65f6\u95f4\uff08\u5bff\u547d\uff09\u3002\u540c\u7406\uff0c\u5bf9\u4e8en\u578b\u4fa7\u7684\u5c11\u6570\u8f7d\u6d41\u5b50\u7a7a\u7a74\uff0c\u4e5f\u5b58\u5728\u76f8\u540c\u5f62\u5f0f\u7684\u516c\u5f0f\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/10-image-of-diffusion-equation-for-minority-carrier-concentration.png\" alt=\"\u5c11\u6570\u8f7d\u6d41\u5b50\u6d53\u5ea6\u76f8\u5173\u7684\u6269\u6563\u65b9\u7a0b\u793a\u610f\u56fe\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u4e0a\u8ff0\u4e8c\u9636\u5fae\u5206\u65b9\u7a0b\u7684\u89e3\u4e3a\u5982\u4e0b\u6307\u6570\u51fd\u6570\u5f62\u5f0f\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u0394n_p (x)=\u0394n_p (0)e^{-x\/L_n}\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c\\(L_n\\)\u662f\u7535\u5b50\u7684\u6269\u6563\u957f\u5ea6\uff0c\u7531\u4ee5\u4e0b\u6570\u5b66\u516c\u5f0f\u8868\u793a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(L_n=\\sqrt{D_n \u03c4_n}\\)<\/span><\/p>\n<p>\\(\u0394p_n (x)\\)\u4e5f\u540c\u6837\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u0394p_n (x)=\u0394p_n (0)e^{-x\/L_p}\\)<\/span><\/p>\n<p>\u65bd\u52a0\u6b63\u5411\u504f\u538b\\(V\\)\u65f6\uff0c\u7ed3\u52bf\u5792\u4f1a\u53d8\u5316\\(qV\\)\u3002\u6839\u636e\u73bb\u5c14\u5179\u66fc\u7edf\u8ba1\uff0cp\u578b\u533a\u4e2d\u7684\u5c11\u6570\u8f7d\u6d41\u5b50\u7535\u5b50\u6d53\u5ea6\\(n_p (0)\\)\u4e3a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(n_p (0)=n_{p0}e^{qV\/kT}\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c\\(n_p (0)\\)\u4e3a\u5e73\u8861\u72b6\u6001\u4e0b\u7684\u5c11\u6570\u8f7d\u6d41\u5b50\u6d53\u5ea6\u3002<br \/>\n\u4e5f\u5c31\u662f\u8bf4\uff0c\u589e\u91cf\\(\u0394n_p (0)\\)\u4e3a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u0394n_p (0)=n_p (0)-n_{p0}=n_{p0}\\begin{pmatrix} e^{qV\/kT}-1\\end{pmatrix}\\)<\/span><\/p>\n<p>\u5173\u4e8en\u578b\u533a\u4e2d\u7684\u5c11\u6570\u8f7d\u6d41\u5b50\u7a7a\u7a74\u4e5f\u662f\u5982\u6b64\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u0394p_n (0)=p_{n0}\\begin{pmatrix} e^{qV\/kT}-1\\end{pmatrix}\\)<\/span><\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/11-shockley-diode-equation-minority-carrier-increases-under-forward-bias.png\" alt=\"\u8096\u514b\u5229\u4e8c\u6781\u7ba1\u65b9\u7a0b\uff1a\u5728\u6b63\u5411\u7535\u538bV\u4e0b\uff0c\u7ed3\u8fb9\u754c\u5904\u7684\u5c11\u6570\u8f7d\u6d41\u5b50\u6d53\u5ea6\u53d8\u4e3ae^(qv\/kT)\u500d\u7684\u8fb9\u754c\u6761\u4ef6\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u7535\u5b50\u6269\u6563\u7535\u6d41\u7531\u4e0b\u9762\u7684\u516c\u5f0f\u7ed9\u51fa\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(I_n=qAD_n\\displaystyle\\frac{dn_p (x)}{dx}|_{x=0}\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c<span class=\"u-ff-mathjax\">A<\/span>\u8868\u793a\u7535\u6d41\u6d41\u8fc7\u5668\u4ef6\u7684\u6a2a\u622a\u9762\u79ef\u3002\u53e6\u5916\uff0c\u7531\u4e8e\u8fd9\u91cc\u6211\u4eec\u66f4\u5173\u6ce8\u7535\u6d41\u7684\u5927\u5c0f\u800c\u975e\u5176\u65b9\u5411\uff0c\u56e0\u6b64\u5728\u4e0b\u6587\u4e2d\u5c06\u5bf9\u7535\u6d41\u7b26\u53f7\u8fdb\u884c\u9002\u5f53\u7684\u6574\u7406\uff0c\u5e76\u57fa\u4e8e\u60f3\u5f53\u4e8e\u7edd\u5bf9\u503c\u7684\u91cf\u8fdb\u884c\u8ba8\u8bba\u3002\u7531\u4e8e\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(np(x)=n_{p0}+\u0394n_p (x)\\)<\/span><\/p>\n<p>\u6240\u4ee5\u53ef\u4ee5\u5f97\u5230\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\\displaystyle\\frac{dn_p (x)}{dx}|_{x=0}=\\displaystyle\\frac{d\u0394n_p (x)}{dx}|_{x=0}=-\\displaystyle\\frac{\u0394n_p (0)}{L_n}\\)<\/span><\/p>\n<p>\u6240\u4ee5\uff0c\u5229\u7528\u5176\u5927\u5c0f\u53ef\u4ee5\u5f97\u5230\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(I_n=qAD_n\\displaystyle\\frac{\u0394n_p (0)}{L_n}=qAD_n\\displaystyle\\frac{n_{p0}}{L_n}\\begin{pmatrix} e^{qV\/kT}-1\\end{pmatrix}\\)<\/span><\/p>\n<p>\u540c\u6837\u5730\uff0c\u7a7a\u7a74\u6269\u6563\u7535\u6d41\u4e3a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(I_p=qAD_p\\displaystyle\\frac{p_{n0}}{L_p}\\begin{pmatrix} e^{qV\/kT}-1\\end{pmatrix}\\)<\/span><\/p>\n<p>\u603b\u7535\u6d41\\(I\\)\u4e3a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(I=I_n+I_p=\\begin{bmatrix}qA\\begin{pmatrix}\\displaystyle\\frac{D_nn_{p0}}{L_n}+\\displaystyle\\frac{D_pp_{n0}}{L_p}\\end{pmatrix}\\end{bmatrix}\\begin{pmatrix} e^{qV\/kT}-1\\end{pmatrix}\\)<\/span><\/p>\n<p>\u901a\u8fc7\u5c06\u4e0e\u7535\u538b\u65e0\u5173\u7684\u90e8\u5206\u5b9a\u4e49\u4e3a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(I_0=qA\\begin{pmatrix}\\displaystyle\\frac{D_nn_{p0}}{L_n}+\\displaystyle\\frac{D_pp_{n0}}{L_p}\\end{pmatrix}\\)<\/span><\/p>\n<p>\u4fbf\u53ef\u4ee5\u63a8\u5bfc\u51fa\u8096\u514b\u5229\u65b9\u7a0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(I=I_0\\begin{pmatrix}e^{qV\/kT}-1\\end{pmatrix}\\)<\/span><\/p>\n<h3 id=\"toc10\">\u6e29\u5ea6\u4f9d\u8d56\u6027<\/h3>\n<p>PN\u7ed3\u4e8c\u6781\u7ba1\u7684\u7279\u6027\u4f1a\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u800c\u6539\u53d8\u3002\u8fd9\u662f\u56e0\u4e3a\u968f\u7740\u6e29\u5ea6\u5347\u9ad8\uff0c\u6676\u683c\u632f\u52a8\u52a0\u5267\uff0c\u4ece\u800c\u5bfc\u81f4\u8f7d\u6d41\u5b50\u7684\u590d\u5408\u548c\u78b0\u649e\u9891\u7387\u589e\u52a0\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/12-voltage-current-characteristic-of-diode-temperature-dependence.png\" alt=\"\u4e8c\u6781\u7ba1\u7684\u7535\u6d41-\u7535\u538b\u7279\u6027 \u6e29\u5ea6\u7279\u6027\" width=\"700\" height=\"394\" \/><\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u5185\u5efa\u7535\u52bf\u7684\u6e29\u5ea6\u7279\u6027<\/strong><br \/>\n\u5bf9\u4e8e\u7845\u4e8c\u6781\u7ba1\u800c\u8a00\uff0c\u5f53\u6e29\u5ea6\u5347\u9ad8\u65f6\uff0c\u5185\u5efa\u7535\u52bf\u901a\u5e38\u4f1a\u5448\u73b0\u7565\u5fae\u4e0b\u964d\u7684\u8d8b\u52bf\u3002\u8fd9\u4e5f\u5f52\u56e0\u4e3a\u70ed\u80fd\u91cf\u7684\u589e\u52a0\u4f7f\u5f97\u8f7d\u6d41\u5b50\u66f4\u5bb9\u6613\u53d1\u751f\u8fc1\u79fb\u3002<\/li>\n<li><strong>\u53cd\u5411\u7535\u6d41\u589e\u5927\u548c\u5de5\u4f5c\u7279\u6027\u53d8\u5316<\/strong><br \/>\n\u53cd\u5411\u9971\u548c\u7535\u6d41\\(I_0\\)\u4f1a\u968f\u7740\u6e29\u5ea6\u5347\u9ad8\u800c\u589e\u52a0\uff0c\u56e0\u6b64\u5373\u4f7f\u5728\u76f8\u540c\u504f\u7f6e\u7535\u538b\u4e0b\uff0c\u53cd\u5411\u7535\u6d41\u4e5f\u4f1a\u7565\u6709\u589e\u5927\u3002\u800c\u8981\u5728\u9ad8\u6e29\u73af\u5883\u4e2d\u4f7f\u7528\u65f6\uff0c\u9700\u8981\u57fa\u4e8e\u8fd9\u79cd\u6f0f\u7535\u6d41\u548c\u7279\u6027\u53d8\u5316\u8fdb\u884c\u4ea7\u54c1\u8bbe\u8ba1\u3002<\/li>\n<\/ul>\n<h2 id=\"toc11\">PN\u7ed3\u4e8c\u6781\u7ba1\u7684\u5e94\u7528\u793a\u4f8b<\/h2>\n<p>\u5229\u7528PN\u7ed3\u7684\u7279\u6027\uff0c\u4e1a\u754c\u5df2\u7ecf\u5f00\u53d1\u51fa\u4e86\u5177\u6709\u5404\u79cd\u529f\u80fd\u7684\u4e8c\u6781\u7ba1\u3002\u5728\u8fd9\u91cc\u6211\u4eec\u5c06\u5bf9\u5178\u578b\u7684\u9f50\u7eb3\u4e8c\u6781\u7ba1\u53ca\u5176\u4ed6\u4e8c\u6781\u7ba1\u7684\u5e94\u7528\u8fdb\u884c\u7b80\u5355\u4ecb\u7ecd\u3002<\/p>\n<h3 id=\"toc12\">\u5229\u7528\u9f50\u7eb3\u4e8c\u6781\u7ba1\u8fdb\u884c\u7535\u538b\u63a7\u5236<\/h3>\n<p>\u9f50\u7eb3\u4e8c\u6781\u7ba1\u662f\u5229\u7528\u4e86PN\u7ed3\u53cd\u5411\u504f\u538b\u51fb\u7a7f\u73b0\u8c61\u7684\u5668\u4ef6\u3002\u57fa\u4e8e\u9f50\u7eb3\u6548\u5e94\uff0c\u5f53\u53cd\u5411\u7535\u538b\u8d85\u8fc7\u7279\u5b9a\u7535\u538b\u503c\u65f6\uff0c\u7535\u6d41\u4f1a\u5f00\u59cb\u6025\u5267\u6d41\u52a8\uff0c\u4ece\u800c\u80fd\u591f\u5c06\u7535\u538b\u4fdd\u6301\u5728\u6052\u5b9a\u503c\u3002<\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u53cd\u5411\u504f\u538b\u4e0b\u7684\u9f50\u7eb3\u51fb\u7a7f<\/strong><br \/>\n\u9f50\u7eb3\u4e8c\u6781\u7ba1\u901a\u8fc7\u63d0\u9ad8PN\u7ed3\u7684\u63ba\u6742\u6d53\u5ea6\u7b49\u624b\u6bb5\uff0c\u5c06\u51fb\u7a7f\u7535\u538b\u8bbe\u8ba1\u5f97\u8f83\u4f4e\uff0c\u4ece\u800c\u5b9e\u73b0\u7a33\u5b9a\u7684\u5de5\u4f5c\u3002<\/li>\n<\/ul>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/13-zener-diode-breakdown-characteristic.png\" alt=\"\u9f50\u7eb3\u4e8c\u6781\u7ba1\u7684\u51fb\u7a7f\u7535\u538b\" width=\"700\" height=\"394\" \/><\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u7535\u6e90\u7535\u538b\u57fa\u51c6\u4e0e\u5728\u4fdd\u62a4\u7535\u8def\u4e2d\u7684\u5e94\u7528<\/strong><br \/>\n\u9f50\u7eb3\u4e8c\u6781\u7ba1\u88ab\u7528\u4f5c\u7535\u538b\u57fa\u51c6\u5668\u4ef6\u5e76\u7528\u4e8e\u8fc7\u538b\u4fdd\u62a4\uff0c\u5728\u7535\u8def\u8bbe\u8ba1\u4e2d\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\u3002<\/li>\n<\/ul>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/14-example-of-voltage-reference-using-zener-diodes.png\" alt=\"\u5229\u7528\u9f50\u7eb3\u4e8c\u6781\u7ba1\u5b9e\u73b0\u7535\u538b\u57fa\u51c6\u7684\u793a\u4f8b\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u51fb\u7a7f\u5206\u4e3a\u9f50\u7eb3\u51fb\u7a7f\u548c\u96ea\u5d29\u51fb\u7a7f\u4e24\u79cd\uff0c\u6839\u636e\u7535\u538b\u7684\u9ad8\u4f4e\uff0c\u8d77\u4e3b\u5bfc\u4f5c\u7528\u7684\u673a\u5236\u4e5f\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u901a\u5e38\u4e24\u8005\u90fd\u88ab\u89c6\u4e3a\u201c\u9f50\u7eb3\u4e8c\u6781\u7ba1\u201d\u800c\u7528\u4e8e\u76f8\u540c\u7684\u7528\u9014\u4e2d\u3002<\/p>\n<h3 id=\"toc13\">\u5176\u4ed6\u4e8c\u6781\u7ba1\u7684\u5e94\u7528<\/h3>\n<p>\u5229\u7528PN\u7ed3\u7684\u5355\u5411\u5bfc\u7535\u7279\u6027\u548c\u53cd\u5411\u7279\u6027\uff0c\u4e1a\u754c\u5236\u9020\u51fa\u4e86\u591a\u79cd\u591a\u6837\u7684\u7535\u5b50\u5143\u5668\u4ef6\u3002<\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>\u6574\u6d41\u4e8c\u6781\u7ba1\uff08AC\u2192DC\u8f6c\u6362\uff09<\/strong><br \/>\n\u4f5c\u4e3a\u5c06\u4ea4\u6d41\u7535\uff08AC\uff09\u6574\u6d41\u8f6c\u6362\u4e3a\u76f4\u6d41\u7535\uff08DC\uff09\u7684\u57fa\u672c\u914d\u7f6e\u88ab\u5e7f\u4e3a\u4f7f\u7528\u3002\u5176\u5e94\u7528\u5f62\u5f0f\u975e\u5e38\u5e7f\u6cdb\uff0c\u5305\u62ec\u6865\u5f0f\u4e8c\u6781\u7ba1\u548c\u534a\u6ce2\u6574\u6d41\u7b49\u591a\u79cd\u4e0d\u540c\u7684\u5f62\u6001\u3002<\/li>\n<\/ul>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/07\/15-ac-dc-conversion-using-rectifier-diodes.png\" alt=\"\u5229\u7528\u6574\u6d41\u4e8c\u6781\u7ba1\u5b9e\u73b0\u4ea4\u6d41\u7535\u5230\u76f4\u6d41\u7535\u7684\u8f6c\u6362\" width=\"700\" height=\"394\" \/><\/p>\n<ul class=\"unordered-list noindent\">\n<li><strong>LED\u548c\u6fc0\u5149\u4e8c\u6781\u7ba1\u7b49\u53d1\u5149\u5668\u4ef6\uff08\u203b\u8fd9\u91cc\u4ec5\u4f5c\u6982\u8ff0\uff09<\/strong><br 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