{"id":28742,"date":"2026-03-10T09:01:32","date_gmt":"2026-03-10T01:01:32","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=28742"},"modified":"2026-03-10T12:03:38","modified_gmt":"2026-03-10T04:03:38","slug":"%e4%bb%80%e4%b9%88%e6%98%af%e9%98%bb%e6%8a%97%ef%bc%9f%e4%ba%a4%e6%b5%81%e7%94%b5%e8%b7%af%e5%88%86%e6%9e%90%e4%b8%8e%e8%ae%be%e8%ae%a1%e5%9f%ba%e7%a1%80","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/circuit-design\/circuit-design-basic\/21859-2","title":{"rendered":"\u4ec0\u4e48\u662f\u963b\u6297\uff1f\u4ea4\u6d41\u7535\u8def\u5206\u6790\u4e0e\u8bbe\u8ba1\u57fa\u7840"},"content":{"rendered":"\\(\\)\n<p>\u963b\u6297\u662f\u6307\u5728\u4ea4\u6d41\u7535\u8def\u4e2d\u7535\u538b\u4e0e\u7535\u6d41\u4e4b\u6bd4\uff0c\u7535\u963b\u4e5f\u662f\u963b\u6297\u7684\u4e00\u79cd\u3002\u5728\u7406\u60f3\u7535\u963b\u4e2d\uff0c\\(Z\\) = \\(R\\)\u4e14\u4e0d\u53d7\u9891\u7387\u5f71\u54cd\u3002\u4f46\u5728\u5305\u542b\u7ebf\u5708\u6216\u7535\u5bb9\u5668\u7684\u4e00\u822c\u7535\u8def\u4e2d\uff0c\u7531\u4e8e\u7535\u6297\u5206\u91cf\u4f1a\u968f\u9891\u7387\u53d8\u5316\uff0c\u56e0\u6b64\u963b\u6297\u4e5f\u4f1a\u5b58\u5728\u9891\u7387\u4f9d\u8d56\u6027\u3002\u4ee5\u6211\u4eec\u719f\u6089\u7684\u8033\u673a\u4e0e\u653e\u5927\u5668\u7684\u7ec4\u5408\u4e3a\u4f8b\uff0c\u867d\u7136\u6d89\u53ca\u9a71\u52a8\u5668\u7279\u6027\u548c\u653e\u5927\u5668\u5931\u771f\u7387\u7b49\u591a\u4e2a\u56e0\u7d20\uff0c\u4f46\u8f93\u5165\u8f93\u51fa\u963b\u6297\u7684\u5173\u7cfb\u4f1a\u5f71\u54cd\u5230\u64ad\u653e\u58f0\u97f3\u7684\u9891\u7387\u54cd\u5e94\u6027\u80fd\u548c\u6700\u5927\u58f0\u538b\u7ea7\u3002\u672c\u6587\u5c06\u4ece\u8fd9\u4e9b\u65e5\u5e38\u73b0\u8c61\u5230\u534a\u5bfc\u4f53\u7535\u8def\u8bbe\u8ba1\uff0c\u8be6\u7ec6\u9610\u8ff0\u963b\u6297\u7684\u57fa\u672c\u539f\u7406\u53ca\u5176\u5e94\u7528\u3002<\/p>\n<p><!-- \u753b\u50cf --><!-- \u540c\u3058\u540d\u524d\u306b\u3059\u308b --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/impedance_02_f01.png\" alt=\"\u963b\u6297\u793a\u610f\u56fe\" width=\"700\" height=\"394\" \/><\/p>\n<h2 id=\"toc1\">\u963b\u6297\u7684\u57fa\u672c\u6982\u5ff5\u53ca\u590d\u6570\u8868\u793a<\/h2>\n<p>\u4ea4\u6d41\u7535\u8def\u4e2d\u7684\u963b\u6297\u88ab\u5b9a\u4e49\u4e3a\u65bd\u52a0\u4e8e\u5143\u4ef6\u4e24\u7aef\u7684\u7535\u538b\u4e0e\u6d41\u8fc7\u8be5\u5143\u4ef6\u7684\u7535\u6d41\u4e4b\u6bd4\u3002\u5176\u4e2d\u5f88\u91cd\u8981\u7684\u662f\uff0c\u4e0e\u4ec5\u6709\u7535\u963b\u7684\u60c5\u51b5\u4e0d\u540c\uff0c\u5f53\u7535\u8def\u4e2d\u542b\u6709\u7ebf\u5708\u548c\u7535\u5bb9\u5668\u7b49\u7535\u6297\u5206\u91cf\u65f6\uff0c\u963b\u6297\u4f1a\u968f\u9891\u7387\u7684\u53d8\u5316\u800c\u53d8\u5316\u3002<\/p>\n<p>\u7535\u963b\u4e3b\u8981\u662f\u5c06\u7535\u80fd\u8f6c\u5316\u4e3a\u70ed\u80fd\u6d88\u8017\uff0c\u800c\u7ebf\u5708\u548c\u7535\u5bb9\u5668\u5219\u80fd\u6682\u65f6\u50a8\u5b58\u7535\u80fd\u5e76\u8fd4\u8fd8\u7ed9\u7535\u8def\uff0c\u56e0\u6b64\u5728\u4ea4\u6d41\u7535\u8def\u4e2d\u4f1a\u4ea7\u751f\u7535\u538b\u4e0e\u7535\u6d41\u4e4b\u95f4\u7684\u76f8\u4f4d\u5dee\u3002\u8fd9\u79cd\u5bfc\u81f4\u76f8\u4f4d\u5dee\u7684\u6210\u5206\u5373\u4e3a\u7535\u6297\uff0c\u4e0e\u7535\u963b\u5206\u91cf\u5171\u540c\u6784\u6210\u963b\u6297\u3002\u7535\u6c14\u8bbe\u5907\u548c\u96f6\u90e8\u4ef6\u7684\u89c4\u683c\u4e66\u4e2d\u6807\u6ce8\u7684\u201c\u03a9\u201d\uff0c\u53ef\u80fd\u6307\u7684\u662f\u76f4\u6d41\u7535\u963b\uff0c\u4e5f\u53ef\u80fd\u6307\u7684\u662f\u7279\u5b9a\u9891\u7387\u4e0b\u7684\u963b\u6297\uff0c\u56e0\u6b64\u9700\u8981\u540c\u65f6\u786e\u8ba4\u6807\u6ce8\u7684\u9891\u7387\u548c\u6d4b\u91cf\u6761\u4ef6\u3002<\/p>\n<p>\u203b\u672c\u6587\u4e2d\u5047\u8bbe\u6b63\u5f26\u6ce2\u9a71\u52a8\u4e0b\u7684\u7a33\u6001\u72b6\u6001\uff0c\u5c06\u7535\u538b\u3001\u7535\u6d41\u4f5c\u4e3a\u6709\u6548\u503c\u7684\u590d\u6570\u5904\u7406\u3002\u56e0\u6b64\uff0c\u6587\u4e2d\u7684\\(V\\)\u3001\\(I\\)\u3001\\(Z\\)\u901a\u5e38\u4e3a\u590d\u6570\uff0c\u5e94\u7406\u89e3\u4e3a\u5305\u542b\u76f8\u4f4d\u5dee\u7684\u91cf\u3002<\/p>\n<h3 id=\"toc2\">\u5b9a\u4e49\u548c\u5355\u4f4d\u03a9\u7684\u542b\u4e49<\/h3>\n<p>\u963b\u6297\u53ef\u7528\u516c\u5f0f\u201c\\(Z\\) = \\(V\\) \/ \\(I\\)\u201d\u6765\u8868\u793a\uff0c\u5176\u5355\u4f4d\u4e0e\u7535\u963b\u76f8\u540c\uff0c\u5747\u4e3a\u6b27\u59c6\uff08\u03a9\uff09\u3002\u5176\u4e2d\\(V\\)\u548c\\(I\\)\u8868\u793a\u6b63\u5f26\u7a33\u6001\u4e0b\u7535\u538b\u548c\u7535\u6d41\u7684\u590d\u6570\u6709\u6548\u503c\u3002\u4ec5\u6709\u7535\u963b\u65f6\uff0c\\(Z\\) = \\(R\\)\uff0c\u5176\u5f62\u5f0f\u4e0e\u76f4\u6d41\u7535\u8def\u7684\u6b27\u59c6\u5b9a\u5f8b\u76f8\u540c\u3002<br \/>\n\u963b\u6297\\(Z\\)\u53ef\u901a\u8fc7\u5143\u4ef6\u4e24\u7aef\u7684\u7535\u538b\\(V\\)\u9664\u4ee5\u6d41\u7ecf\u8be5\u5143\u4ef6\u7684\u7535\u6d41\\(I\\)\u6c42\u5f97\u3002\u8fd9\u8868\u660e\u5176\u4e0e\u201c\u76f4\u6d41\u7535\u8def\u7684\u7535\u963b\u201d\u4e00\u6837\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7\u6b27\u59c6\u5b9a\u5f8b\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n<p><strong>\u963b\u6297\u7684\u57fa\u672c\u5173\u7cfb\u5f0f<\/strong><\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z=\\displaystyle\\frac{V}{I}\\)<\/span><\/p>\n<p><strong>\u5404\u5143\u4ef6\u7684\u963b\u6297\uff08\u7535\u963b\\(Z_R\\)\u3001\u7535\u611f\\(Z_L\\)\u3001\u7535\u5bb9\\(Z_C\\)\uff09<\/strong><\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_R=R,\u3000Z_L=j\u03c9L,\u3000Z_C=\\displaystyle\\frac{1}{j\u03c9C}=-j\\displaystyle\\frac{1}{\u03c9C}\\)<\/span><\/p>\n<p>\u5176\u4e2d\\(j\\)\u4e3a\u865a\u6570\u5355\u4f4d\uff0c\u6ee1\u8db3\\(j^2\\)=\u22121\u7684\u5173\u7cfb\u5f0f\u3002\u5728\u4ea4\u6d41\u7535\u8def\u4e2d\uff0c\u4e3a\u4e86\u5904\u7406\u7535\u611f\u5668\u548c\u7535\u5bb9\u5668\u5f15\u8d77\u7684\u7535\u538b\u4e0e\u7535\u6d41\u7684\u76f8\u4f4d\u5dee\uff08\u5b58\u5728+90\u00b0\/\u221290\u00b0\u7684\u504f\u79fb\uff09\uff0c\u963b\u6297\u91c7\u7528\u590d\u6570\u5f62\u5f0f\u8868\u793a\uff0c\u5176\u865a\u6570\u90e8\u5206\u7528\u7b26\u53f7\\(j\\)\u8868\u793a\u3002\u53e6\u5916\uff0c\\(\u03c9\\)\u88ab\u79f0\u4e3a\u89d2\u9891\u7387\uff0c\u5f53\u4f7f\u7528\u9891\u7387\\(f\\)\u65f6\uff0c\u5b58\u5728\\(\u03c9\\)=2\\(\u03c0f\\)\u7684\u5173\u7cfb\u3002<br \/>\n\u4ea4\u6d41\u7535\u8def\u4e0e\u76f4\u6d41\u7535\u8def\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\uff0c\u4ea4\u6d41\u7535\u7684\u7535\u538b\u548c\u7535\u6d41\u4f1a\u968f\u65f6\u95f4\u800c\u53d8\u5316\u3002\u56e0\u6b64\uff0c\u4ec5\u7528\u5b9e\u6570\u65e0\u6cd5\u5b8c\u6574\u8868\u8fbe\uff0c\u9700\u8981\u501f\u52a9\u590d\u6570\u6765\u540c\u65f6\u5305\u542b\u5927\u5c0f\u548c\u76f8\u4f4d\u4fe1\u606f\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/02-voltage-and-current-changing-over-time-diagram.png\" alt=\"\u76f4\u6d41\u7535\u8def vs \u4ea4\u6d41\u7535\u8def\uff5c\u7eb5\u8f74\uff1a\u7535\u538b\/\u7535\u6d41, \u6a2a\u8f74\uff1a\u65f6\u95f4\uff0c\u76f8\u4f4d\u5dee0\u00b0\uff08\u4ec5\u7535\u963b\uff09\" width=\"700\" height=\"394\" \/><\/p>\n<h3 id=\"toc3\">\u7535\u963b\\(R\\)\u4e0e\u7535\u6297\u5206\u91cf\\(X\\)\u7684\u5173\u7cfb\uff08\u590d\u6570\u963b\u6297\u57fa\u7840\uff09<\/h3>\n<p>\u963b\u6297\u7531\u7535\u963b\uff08\\(R\\)\uff09\u548c\u7535\u6297\uff08\\(X\\)\uff09\u4e24\u4e2a\u5206\u91cf\u7ec4\u6210\u3002\u7535\u963b\u4ee5\u56fa\u5b9a\u6bd4\u4f8b\u963b\u788d\u7535\u6d41\u6d41\u52a8\uff1b\u800c\u7535\u6297\u5219\u662f\u7531\u7ebf\u5708\u6216\u7535\u5bb9\u5668\u4ea7\u751f\u7684\uff0c\u4f9d\u8d56\u4e8e\u9891\u7387\u3002\u4e24\u8005\u5171\u540c\u5f71\u54cd\u7740\u6574\u4f53\u963b\u6297\u3002<\/p>\n<p>\u8fd9\u6b63\u662f\u7535\u673a\u63a7\u5236\u7535\u8def\u548c\u7167\u660e\u8c03\u5149\u5668\u5728\u7279\u5b9a\u9891\u7387\u4e0b\u4f1a\u6539\u53d8\u5de5\u4f5c\u7279\u6027\u7684\u539f\u56e0\u6240\u5728\u3002<\/p>\n<p><!-- \u753b\u50cf --><!-- \u540c\u3058\u540d\u524d\u306b\u3059\u308b --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/impedance_f01_02.png\" alt=\"\u7535\u963b\u548c\u7535\u6297\u5206\u91cf\" width=\"700\" height=\"394\" \/><\/p>\n<h3 id=\"toc4\">\u57fa\u672c\u516c\u5f0f\u548c\u5927\u5c0f\u7684\u8868\u8fbe<\/h3>\n<p>\u963b\u6297\u4ee5\u590d\u6570\u5f62\u5f0f\u8868\u793a\uff0c\u5b9e\u6570\u90e8\u5206\u4e3a\u7535\u963b\uff08\\(R\\)\uff09\uff0c\u865a\u6570\u90e8\u5206\u4e3a\u7535\u6297\uff08\\(X\\)\uff09\uff0c\u7528\u4e0b\u9762\u7684\u8868\u8fbe\u5f0f\u6765\u8868\u8fbe\u3002<\/p>\n<p>\u590d\u6570\u963b\u6297\uff1a\u8fd9\u91cc\u4f7f\u7528\u7684\u201c\\(j\\)\u201d\u4e3a\u865a\u6570\u5355\u4f4d\uff08\\(j^2\\)=-1\uff09\uff0c\u901a\u8fc7\u8be5\u8868\u8fbe\u65b9\u5f0f\u53ef\u6e05\u6670\u533a\u5206\u5b9e\u90e8\u548c\u865a\u90e8\u3002<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z=R+jX\\)<\/span><\/p>\n<p>\u7edd\u5bf9\u503c\u4e0e\u76f8\u4f4d\u89d2\uff1a\u963b\u6297\u7684\u5927\u5c0f|\\(Z\\)|\u53ef\u50cf\u7535\u963b\u503c\u4e00\u6837\u4f5c\u4e3a\u5b9e\u6570\u5904\u7406\uff0c\u56e0\u6b64\u5728\u89c4\u683c\u503c\u6bd4\u8f83\u548c\u6982\u7b97\u65f6\u6709\u65f6\u7528|\\(Z\\)|\u8868\u793a\u3002\u4f46\u662f\u4ec5\u7528\u2223\\(Z\\)\u2223\u4f1a\u4e22\u5931\u76f8\u4f4d\u5dee\u4fe1\u606f\uff0c\u56e0\u6b64\u5728\u7535\u8def\u5206\u6790\u4e0e\u8bbe\u8ba1\u4e2d\uff0c\u901a\u5e38\u9700\u8981\u5c06\\(Z\\) = \\(R\\) + \\(jX\\)\u548c\u76f8\u4f4d\u89d2\\(\u03b8\\)\u4e00\u5e76\u5904\u7406\u3002\u76f8\u4f4d\u89d2\\(\u03b8\\)\u53ef\u901a\u8fc7\u4e0b\u9762\u7684\u516c\u5f0f\u6c42\u5f97\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(|Z|=\\sqrt{(R^2+X^2)}, \u03b8={tan}^{-1}\\left(\\displaystyle\\frac{X}{R}\\right)\\)<\/span><\/p>\n<p>\u89d2\u9891\u7387\uff1a\u89d2\u9891\u7387\\(\u03c9\\)\u53ef\u4f7f\u7528\u9891\u7387\\(f\\)\u7528\u4e0b\u9762\u7684\u516c\u5f0f\u6765\u8868\u793a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u03c9=2\u03c0f\u3000(f: \u5468\u6ce2\u6570[Hz])\\)<\/span><\/p>\n<p>\u7535\u6297\u7b26\u53f7\u7ea6\u5b9a\uff1a\u5728\u672c\u6587\u4e2d\uff0c\u611f\u6297\\(X_L\\)\u548c\u5bb9\u6297\\(X_C\\)\u5747\u5b9a\u4e49\u4e3a\u6b63\u91cf\uff08\u5927\u5c0f\uff09\uff0c\u5176\u611f\u6027\/\u5bb9\u6027\u5dee\u5f02\u901a\u8fc7\u865a\u6570\u5355\u4f4dj\u7684\u7b26\u53f7\u6765\u8868\u793a\u3002<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(X_L=\u03c9L(&gt;0),\u3000X_C\\displaystyle\\frac{1}{\u03c9C}(&gt;0)\\)<\/span><\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_L=+jX_L,\u3000Z_C=-jX_C\\)<\/span><\/p>\n<p>\u5728\u4e32\u8054\u8fde\u63a5\u7b49\u60c5\u51b5\u4e0b\uff0c\u5408\u6210\u7535\u6297\u7684\u8868\u793a\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(X=X_L-X_C\\)<\/span><\/p>\n<p>\u6240\u4ee5\uff0c\u611f\u6027\u5206\u91cf\u4f1a\u51fa\u73b0\u5728\u865a\u6570\u6570\u8f74\u7684\u6b63\u65b9\u5411\uff08+\\(j\\)\u4fa7\uff09\uff0c\u800c\u5bb9\u6027\u5206\u91cf\u5219\u51fa\u73b0\u5728\u8d1f\u65b9\u5411\uff08-\\(j\\)\u4fa7\uff09\uff0c\u5f53\u4e8c\u8005\u5927\u5c0f\u76f8\u7b49\u65f6\u4fbf\u4f1a\u76f8\u4e92\u62b5\u6d88\u3002<\/p>\n<p>\u901a\u8fc7\u8fd9\u4e9b\u5173\u7cfb\u5f0f\uff0c\u53ef\u4ee5\u4ece\u6570\u503c\u548c\u89c6\u89c9\u4e24\u4e2a\u7ef4\u5ea6\u628a\u63e1\u7535\u8def\u7279\u6027\u3002<\/p>\n<p><!-- \u753b\u50cf --><!-- \u540c\u3058\u540d\u524d\u306b\u3059\u308b --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/impedance_02_f02.png\" alt=\"\u963b\u6297\u7684\u5411\u91cf\u8868\u793a\uff5c\u5b9e\u8f74\uff1aR\uff0c\u865a\u8f74\uff1aX\uff0c\u89d2\u5ea6\uff1a\u03b8\uff0c\u5411\u91cf\uff1aZ\" width=\"700\" height=\"394\" \/><\/p>\n<h2 id=\"toc5\">\u963b\u6297\u548c\u9891\u7387\u7684\u5173\u7cfb<\/h2>\n<p>\u963b\u6297\u503c\u4f1a\u968f\u9891\u7387\u7684\u53d8\u5316\u800c\u53d8\u5316\u3002\u7535\u963b\u7684\u963b\u503c\u5728\u4efb\u4f55\u9891\u7387\u4e0b\u90fd\u4fdd\u6301\u6052\u5b9a\uff0c\u800c\u7535\u611f\u5219\u4f1a\u968f\u7740\u9891\u7387\u5347\u9ad8\u5bf9\u7535\u6d41\u4ea7\u751f\u66f4\u5f3a\u7684\u963b\u788d\u4f5c\u7528\u3002\u76f8\u53cd\uff0c\u7535\u5bb9\u4f1a\u968f\u7740\u9891\u7387\u7684\u5347\u9ad8\u800c\u8ba9\u7535\u6d41\u66f4\u5bb9\u6613\u901a\u8fc7\u3002\u7406\u89e3\u8fd9\u4e00\u5dee\u5f02\u540e\uff0c\u4fbf\u80fd\u591f\u66f4\u52a0\u51c6\u786e\u5730\u8fdb\u884c\u7535\u5b50\u7535\u8def\u8bbe\u8ba1\u3002<\/p>\n<h3 id=\"toc6\">\u7535\u963b\u4e0e\u9891\u7387\uff08\u7535\u963b\u4e0d\u968f\u9891\u7387\u53d8\u5316\u7684\u539f\u56e0\uff09<\/h3>\n<p>\u7535\u538b\u548c\u7535\u6d41\u5728\u76f4\u6d41\u7535\u8def\u4e2d\u4fdd\u6301\u6052\u5b9a\uff0c\u800c\u5728\u4ea4\u6d41\u7535\u8def\u4e2d\u5219\u5448\u6b63\u5f26\u6ce2\u72b6\u5468\u671f\u6027\u53d8\u5316\u3002\u4f46\u662f\uff0c\u7531\u4e8e\u7535\u963b\u5206\u91cf\u5bf9\u76f4\u6d41\u7535\u6d41\u548c\u4ea4\u6d41\u7535\u6d41\u7684\u963b\u788d\u4f5c\u7528\u76f8\u540c\uff0c\u56e0\u6b64\u4e0d\u4f1a\u53d7\u5230\u9891\u7387\u53d8\u5316\u7684\u5f71\u54cd\u3002<\/p>\n<p>\u6b63\u662f\u7531\u4e8e\u8fd9\u4e00\u7279\u6027\uff0c\u7535\u963b\u4e0d\u4f9d\u8d56\u4e8e\u9891\u7387\uff0c\u6545\u53ea\u8981\u65bd\u52a0\u76f8\u540c\u7684\u6709\u6548\uff08RMS\uff09\u7535\u538b\uff0c\u65e0\u8bba\u662f\u76f4\u6d41\u8fd8\u662f\u4ea4\u6d41\uff0c\u6309\u7167\\(P\\) = \\(V_{rms}\\)\\(^2\\) \/ \\(R\\)\uff0c\u5176\u5e73\u5747\u529f\u7387\u90fd\u4fdd\u6301\u76f8\u540c\uff08\u524d\u63d0\u662f\u6240\u65bd\u52a0\u7535\u538b\u7684\u6709\u6548\u503c\u4fdd\u6301\u6052\u5b9a\uff09\u3002<\/p>\n<p>\u5728\u4ea4\u6d41\u7535\u8def\u4e2d\uff0c\u7535\u963b\u5206\u91cf\u540c\u6837\u9075\u5faa\u8fd9\u4e00\u5173\u7cfb\u3002\u7528\u77ac\u65f6\u503c\u8868\u793a\u4ea4\u6d41\u7535\u538b\u548c\u7535\u6d41\u65f6\uff0c\u8868\u8fbe\u5f0f\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(v(t)=V sin\u2061(\u03c9t)\\)<\/span><\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(i(t)=I sin\u2061(\u03c9t)\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c\u89d2\u9891\u7387\\(\u03c9\\)\u662f\u5c06\u4ea4\u6d41\u7535\u6bcf\u79d2\u7684\u91cd\u590d\u6b21\u6570\uff08\u9891\u7387\\(f\\)\uff09\u7528\u5706\u5468\uff082\\(\u03c0\\)\uff09\u8868\u793a\u7684\u91cf\uff0c\u5176\u8868\u8fbe\u5f0f\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u03c9=2\u03c0f\\)<\/span><\/p>\n<p>\u5728\u7eaf\u7535\u963b\u6784\u6210\u7684\u7535\u8def\u4e2d\uff0c\u4ea4\u6d41\u7535\u538b\u548c\u4ea4\u6d41\u7535\u6d41\u7684\u6ce2\u5cf0\u548c\u6ce2\u8c37\u65f6\u95f4\u70b9\u59cb\u7ec8\u4fdd\u6301\u540c\u6b65\uff08\u76f8\u4f4d\u5dee\u4e3a\u96f6\uff09\uff0c\u56e0\u6b64\u5176\u4e0e\u76f4\u6d41\u7535\u8def\u540c\u6837\u9002\u7528\u6b27\u59c6\u5b9a\u5f8b\u3002\u4ea4\u6d41\u7535\u538b\u548c\u7535\u6d41\u7684\u5927\u5c0f\u968f\u65f6\u95f4\u53d8\u5316\uff0c\u76f4\u63a5\u5904\u7406\u8f83\u4e3a\u56f0\u96be\uff0c\u56e0\u6b64\u901a\u5e38\u5229\u7528\u201c\u6709\u6548\u503c\u201d\u6765\u5206\u6790\u7535\u8def\u7684\u5de5\u4f5c\u72b6\u6001\u3002<\/p>\n<p>\u201c\u6709\u6548\u503c\u201d\u662f\u6307\u5c06\u201c\u4ea4\u6d41\u7535\u538b\u548c\u7535\u6d41\u5b9e\u9645\u7ed9\u7535\u8def\u5e26\u6765\u7684\u80fd\u91cf\u5927\u5c0f\u201d\u6362\u7b97\u4e3a\u76f4\u6d41\u7535\u538b\u503c\u548c\u7535\u6d41\u503c\u7684\u6570\u503c\u3002\u5982\u679c\u4ee5\u8fd9\u4e2a\u6709\u6548\u503c\u6765\u8003\u8651\uff0c\u5219\u8fde\u63a5\u7535\u963b\u7684\u4ea4\u6d41\u7535\u8def\u4e5f\u4e0e\u76f4\u6d41\u7535\u8def\u4e00\u6837\u9002\u7528\u6b27\u59c6\u5b9a\u5f8b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(V_{rms}=I_{rms}R\\)<\/span><\/p>\n<p>\u5bf9\u4e8e\u7406\u60f3\u7535\u963b\u800c\u8a00\uff0c\u7531\u4e8e\u7535\u963b\u503c\\(R\\)\u4e0e\u9891\u7387\u65e0\u5173\uff0c\u56e0\u6b64\u5f53\u65bd\u52a0\u7684\u7535\u538b\u6709\u6548\u503c\u76f8\u540c\u65f6\uff0c\u5373\u4f7f\u9891\u7387\u53d8\u5316\uff0c\\(I_{RMS}\\) = \\(V_{RMS}\\) \/ \\(R\\)\u7684\u5173\u7cfb\u4e5f\u4e0d\u4f1a\u53d8\u5316\u3002\u6240\u4ee5\u5bf9\u4e8e\u7535\u963b\u5206\u91cf\u800c\u8a00\uff0c\u5728\u4ea4\u6d41\u7535\u8def\u4e2d\u4e5f\u53ef\u4f7f\u7528\u76f8\u540c\u7684\u5173\u7cfb\u5f0f\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u5143\u5668\u4ef6\u4e2d\uff0c\u7531\u4e8e\u9ad8\u9891\u4e0b\u7684\u8d8b\u80a4\u6548\u5e94\u548c\u5bc4\u751f\u7535\u611f\/\u7535\u5bb9\u7684\u5f71\u54cd\uff0c\u6709\u6548\u7535\u963b\u548c\u76f8\u4f4d\u4f1a\u53d1\u751f\u8f7b\u5fae\u53d8\u5316\uff08\u8bf7\u53c2\u8003\u6280\u672f\u89c4\u683c\u4e66\u4e2d\u7684\u9891\u7387\u7279\u6027\u548c\u81ea\u8c10\u632f\u9891\u7387\uff09\u3002<\/p>\n<p><strong>\u6e29\u5ea6\u5bf9\u7535\u963b\u7684\u5f71\u54cd<\/strong><\/p>\n<p>\u7535\u963b\u4e0e\u9891\u7387\u65e0\u5173\uff0c\u4f46\u4f1a\u53d7\u6e29\u5ea6\u53d8\u5316\u7684\u5f71\u54cd\u3002\u5f88\u591a\u6750\u6599\u90fd\u5177\u6709\u6e29\u5ea6\u7cfb\u6570\uff0c\u5176\u963b\u503c\u4f1a\u968f\u5de5\u4f5c\u73af\u5883\u800c\u53d8\u5316\u3002\u5728\u963b\u6297\u8ba1\u7b97\u4e2d\u9700\u8003\u8651\u73af\u5883\u53d8\u5316\u56e0\u7d20\u65f6\uff0c\u6df1\u5165\u7406\u89e3\u8fd9\u4e9b\u5f71\u54cd\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/05-temperature-vs-resistance-characteristics.png\" alt=\"\u6e29\u5ea6-\u7535\u963b\u7279\u6027\" width=\"700\" height=\"394\" \/><\/p>\n<p><strong>\u7126\u8033\u5b9a\u5f8b<\/strong><\/p>\n<p>\u63cf\u8ff0\u7535\u963b\u5c06\u7535\u80fd\u8f6c\u5316\u4e3a\u70ed\u80fd\u65f6\u7684\u89c4\u5f8b\u7684\u5b9a\u5f8b\u88ab\u79f0\u4e3a\u201c\u7126\u8033\u5b9a\u5f8b\u201d\u3002\u6839\u636e\u7126\u8033\u5b9a\u5f8b\uff0c\u6d41\u7ecf\u7535\u963b\u7684\u7535\u6d41\\(I\\)\u3001\u7535\u963b\u503c\\(R\\)\u3001\u6d41\u8fc7\u7535\u6d41\u7684\u65f6\u95f4\\(t\\)\u3001\u6240\u4ea7\u751f\u7684\u70ed\u80fd\\(Q\\)\u4e4b\u95f4\u7684\u5173\u7cfb\u53ef\u8868\u793a\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Q=I^2 Rt\\)<\/span><\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(P=I^2 R=\\displaystyle\\frac{V^2}{R}\\)<\/span><\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5f53\u6052\u5b9a\u7535\u6d41\u6301\u7eed\u6d41\u8fc7\u7535\u963b\u65f6\uff0c\u7535\u80fd\u8f6c\u5316\u4e3a\u70ed\u80fd\u7684\u91cf\u4e0e\u8be5\u7535\u6d41\u5927\u5c0f\u7684\u5e73\u65b9\u3001\u7535\u963b\u503c\u53ca\u6d41\u8fc7\u7535\u6d41\u7684\u65f6\u95f4\u6210\u6b63\u6bd4\u3002<\/p>\n<h3 id=\"toc7\">\u7535\u6297\u4e0e\u9891\u7387\u4f9d\u8d56\u6027\uff08\u611f\u6297\u548c\u5bb9\u6297\uff09<\/h3>\n<p>\u7535\u6297\u662f\u6307\u7ebf\u5708\u548c\u7535\u5bb9\u5668\u5bf9\u4ea4\u6d41\u7535\u6240\u8868\u73b0\u51fa\u7684\u9891\u7387\u4f9d\u8d56\u6027\uff0c\u4ee5\u963b\u6297\u7684\u865a\u90e8\u5f62\u5f0f\u8868\u793a\u3002\u4e0e\u7535\u963b\u4e0d\u540c\uff0c\u7535\u6297\u4f1a\u968f\u7740\u4ea4\u6d41\u9891\u7387\u7684\u53d8\u5316\u800c\u53d1\u751f\u660e\u663e\u6539\u53d8\u3002\u5bf9\u4e8e\u7ebf\u5708\u800c\u8a00\uff0c\u4f1a\u8868\u73b0\u51fa\u963b\u788d\u7535\u6d41\u53d8\u5316\u7684\u611f\u6297\u7279\u6027\uff0c\u9891\u7387\u8d8a\u9ad8\u5219\u7535\u6d41\u8d8a\u96be\u901a\u8fc7\u3002\u8be5\u611f\u6297\uff08\\(X_L\\)\uff09\u53ef\u901a\u8fc7\u4e0b\u9762\u7684\u516c\u5f0f\u8868\u793a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(X_L=2\u03c0fL=\u03c9L\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c\\(X_L\\)\u8868\u793a\u611f\u6297\uff0c\\(Z\\)\u8868\u793a\u9891\u7387\uff0c\\(L\\)\u8868\u793a\u7535\u611f\u503c\uff08\u7ebf\u5708\u7684\u7279\u6027\u503c\uff09\uff0c\\(\u03c9\\)=2\\(\u03c0f\\)\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/06-inductive-reactance.png\" alt=\"\u611f\u6297\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u76f8\u53cd\uff0c\u7535\u5bb9\u5668\u5219\u8868\u73b0\u51fa\u5bb9\u6297\u7279\u6027\uff08\\(X_C\\)\uff09\uff0c\u9891\u7387\u8d8a\u9ad8\u7535\u6d41\u8d8a\u5bb9\u6613\u901a\u8fc7\u3002\u8be5\u6027\u8d28\u53ef\u901a\u8fc7\u4e0b\u9762\u7684\u516c\u5f0f\u8868\u793a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(X_C=\\displaystyle\\frac{1}{2\u03c0fC}=\\displaystyle\\frac{1}{\u03c9C}\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c\\(X_C\\)\u8868\u793a\u5bb9\u6297\uff0c<span class=\"u-ff-mathjax\">C<\/span>\u8868\u793a\u7535\u5bb9\u503c\uff08\u7535\u5bb9\u5668\u7684\u7279\u6027\u503c\uff09\uff0c\\(\u03c9\\)=2\\(\u03c0f\\)\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/07-capacitive-reactance.png\" alt=\"\u5bb9\u6297\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u7535\u6297\u4f5c\u4e3a\u590d\u6570\u5f62\u6210\u4e86\u963b\u6297\u7684\u865a\u90e8\uff0c\u5176\u4e2d\u611f\u6297\u4f7f\u7535\u6d41\u6ede\u540e\u7535\u538b90\u00b0\uff0c\u800c\u5bb9\u6297\u5219\u4f7f\u7535\u6d41\u8d85\u524d\u7535\u538b90\u00b0\u3002<\/p>\n<p><!-- \u753b\u50cf --><!-- \u540c\u3058\u540d\u524d\u306b\u3059\u308b --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/impedance_f05_02.png\" alt=\"\u963b\u6297\u7684\u6784\u6210\u8981\u7d20\u4e0e\u9891\u7387\u7684\u5173\u7cfb\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u611f\u6297\u4e3a+\\(jX_L\\)\uff0c\u5bb9\u6297\u4e3a-\\(jX_C\\)\uff0c\u4e8c\u8005\u5728\u865a\u8f74\u4e0a\u7b26\u53f7\u76f8\u53cd\uff0c\u6545\u5f53\u6570\u503c\u76f8\u7b49\u65f6\u5c06\u76f8\u4e92\u62b5\u6d88\u3002<\/p>\n<p>\u6709\u5173\u7535\u6297\u7684\u8be6\u7ec6\u8bf4\u660e\u3001\u5177\u4f53\u7535\u8def\u793a\u4f8b\u4ee5\u53ca\u901a\u8fc7\u6ce2\u7279\u56fe\u8fdb\u884c\u5206\u6790\u7684\u65b9\u6cd5\uff0c\u8bf7\u53c2\u9605\u4e0b\u9762\u7684\u9875\u9762\uff1a<\/p>\n<p><!-- \u30ea\u30f3\u30af --><\/p>\n<p><a href=\"https:\/\/techweb.rohm.co.jp\/product\/circuit-design\/electric-circuit-design\/18325\/\">\u3010\u7535\u6297\u8be6\u89e3\u9875\u9762\u3011<\/a><\/p>\n<h3 id=\"toc8\">\u8c10\u632f\u7535\u8def\u4e0e\u8c10\u632f\u9891\u7387<\/h3>\n<p>\u5728\u7531\u7ebf\u5708\u548c\u7535\u5bb9\u5668\u7ec4\u6210\u7684LC\u7535\u8def\u4e2d\uff0c\u5b58\u5728\u4f7f\u611f\u6297\u548c\u5bb9\u6297\u7684\u5927\u5c0f\u76f8\u7b49\u7684\u7279\u5b9a\u9891\u7387\u3002\u8be5\u9891\u7387\u79f0\u4e3a\u8c10\u632f\u9891\u7387\uff08<span class=\"u-ff-mathjax\">f<\/span><sub>0<\/sub>\uff09\uff0c\u5176\u8868\u8fbe\u5f0f\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(f_0=\\displaystyle\\frac{1}{2\u03c0\\sqrt{LC}}\\)<\/span><\/p>\n<p>\u53e6\u5916\uff0c\u89d2\u9891\u7387\u6839\u636e\\(\u03c9\\) = 2\\(\u03c0f\\)\u53ef\u8868\u793a\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u03c9_0=\\displaystyle\\frac{1}{\\sqrt{LC}}\\)<\/span><\/p>\n<p>\u5f53\u7535\u8def\u5904\u4e8e\u8c10\u632f\u72b6\u6001\u65f6\uff0c\u7ebf\u5708\u4e0e\u7535\u5bb9\u5668\u7684\u7535\u6297\u76f8\u4e92\u62b5\u6d88\uff0c\u7535\u6297\u5206\u91cf\u4e3a0\u3002\u6b64\u5916\uff0c\u8be5\u7279\u6027\u8868\u660e\u5728\u4e32\u8054RLC\u7535\u8def\u4e2d\uff0c\u8c10\u632f\u65f6\u5408\u6210\u7535\u6297\u4e3a0\uff0c\u963b\u6297\u4ec5\u5269\u5b9e\u6570\u5206\u91cf\uff08\u4e3b\u8981\u4e3a\u7535\u963b\u5206\u91cf\\(R\\)\uff09\u3002<\/p>\n<p>\u5229\u7528\u8fd9\u4e00\u7279\u6027\uff0c\u53ef\u5b9e\u73b0\u80fd\u9009\u62e9\u7279\u5b9a\u9891\u7387\u7684\u6ee4\u6ce2\u5668\u548c\u8c03\u8c10\u7535\u8def\uff08\u5982\u6536\u97f3\u673a\u7684\u9009\u53f0\u7535\u8def\u7b49\uff09\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/09-resonant-circuits-and-resonant-frequency.png\" alt=\"\u8c10\u632f\u7535\u8def\u4e0e\u8c10\u632f\u9891\u7387\" width=\"700\" height=\"394\" \/><\/p>\n<h2 id=\"toc9\">\u963b\u6297\u7684\u5408\u6210\u6cd5\u5219\u548c\u8ba1\u7b97\u65b9\u6cd5<\/h2>\n<p>\u5f53\u7535\u8def\u4e2d\u5b58\u5728\u591a\u4e2a\u963b\u6297\u65f6\uff0c\u9700\u5c06\u5b83\u4eec\u5408\u6210\u4ee5\u6c42\u5f97\u7535\u8def\u603b\u963b\u6297\u3002\u8fd9\u79cd\u8ba1\u7b97\u5728\u7535\u8def\u8bbe\u8ba1\u548c\u6545\u969c\u6392\u9664\u4e2d\u4f1a\u7ecf\u5e38\u4f7f\u7528\u3002\u4f8b\u5982\uff0c\u5f53\u591a\u4e2a\u7535\u5668\u8bbe\u5907\u63a5\u5165\u5bb6\u7528\u7535\u6e90\u65f6\uff0c\u901a\u8fc7\u963b\u6297\u7684\u5408\u6210\u8ba1\u7b97\u53ef\u4ee5\u9884\u6d4b\u5176\u5bf9\u8d1f\u8f7d\u7684\u5f71\u54cd\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u9884\u6d4b\u7535\u8def\u8d1f\u8f7d\u7684\u5f71\u54cd\uff0c\u5e76\u9488\u5bf9\u95ee\u9898\u91c7\u53d6\u76f8\u5e94\u63aa\u65bd\u3002<\/p>\n<h3 id=\"toc10\">\u4e32\u8054\u65f6\u7684\u8ba1\u7b97\u65b9\u6cd5<\/h3>\n<p>\u4e32\u8054\u7535\u8def\u7684\u963b\u6297\uff0c\u4e0e\u7535\u963b\u7684\u60c5\u51b5\u76f8\u540c\uff0c\u53ef\u901a\u8fc7\u76f4\u63a5\u7d2f\u52a0\u5404\u5143\u4ef6\u503c\u6c42\u5f97\u3002\u7531\u4e8e\u8ba1\u7b97\u7b80\u5355\u4e14\u6613\u4e8e\u7406\u89e3\uff0c\u56e0\u6b64\u8fd9\u79cd\u8fde\u63a5\u65b9\u5f0f\u4e5f\u5e38\u7528\u4e8e\u5723\u8bde\u6811\u706f\u9970\u7b49\u706f\u6ce1\u4e32\u8054\u7535\u8def\u4e2d\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/10-series-impedance.png\" alt=\"\u4e32\u8054\u963b\u6297\uff5c\u5408\u6210 Z=\u03a3Zn\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u4e32\u8054\u8fde\u63a5\u65f6\uff0c\u603b\u963b\u6297\u53ef\u901a\u8fc7\u4e0b\u9762\u7684\u516c\u5f0f\u8868\u793a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_{total}=Z_1+Z_2+Z_3+\u22ef+Z_n\\)<\/span><\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u27f9Z_{total}=\\displaystyle\\sum {Z_n}\\)<\/span><\/p>\n<p>\u53e6\u5916\uff0c\u5f53\u5c06\u5404\u5143\u4ef6\u7684\u963b\u6297\u5206\u89e3\u4e3a\u7535\u963b\u5206\u91cf\uff08\\(R\\)\uff09\u548c\u7535\u6297\u5206\u91cf\uff08\\(X\\)\uff09\u8003\u8651\u65f6\uff0c\u8868\u8fbe\u5f0f\u53ef\u6539\u5199\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_{total} =(R_1+R_2+\u22ef+R_n )+j(X_1+X_2+\u22ef+X_n )\\)<\/span><\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u27f9Z_{total}=\\displaystyle\\sum {R_n}+j\\displaystyle\\sum {X_n}\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c\u5c06\u6240\u6709\u7535\u963b\u5206\u91cf\u76f8\u52a0\u5373\u5f97\u5230\u7535\u8def\u7684\u603b\u7535\u963b\uff0c\u5c06\u6240\u6709\u7535\u6297\u5206\u91cf\u76f8\u52a0\u5373\u5f97\u5230\u7535\u8def\u7684\u603b\u7535\u6297\u3002<br \/>\n\u4e0b\u9762\u6211\u4eec\u5728\u5b9e\u9645\u7535\u8def\u4e2d\u9a8c\u8bc1\u4e00\u4e0b\u3002\u7535\u963b10\u03a9\u3001\u7ebf\u570810mH\u3001\u7535\u5bb91\u03bcF\u4ee51kHz\u9891\u7387\u8fdb\u884c\u4e32\u8054\u8fde\u63a5\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/11-series-impedance-calculation-example-circuit.png\" alt=\"\u4e32\u8054\u963b\u6297\u8ba1\u7b97\u793a\u4f8b\u7535\u8def\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u6b64\u65f6\uff0c\u7535\u963b\u7684\u963b\u6297\u4e3a10+\\(j\\)0\u2009\u03a9\uff0c\u7ebf\u5708\u7684\u963b\u6297\u4e3a0+\\(j\\)62.8\u2009\u03a9\uff0c\u7535\u5bb9\u7684\u963b\u6297\u4e3a0\u2212\\(j\\)159\u2009\u03a9\u3002\u5c06\u8fd9\u4e9b\u5168\u90e8\u76f8\u52a0\u540e\uff0c\u603b\u963b\u6297\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_{total} =10+j(62.8-159)=10-j96.2\\)<\/span><\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u4e3a\u4e86\u6c42\u5f97\u8be5\u963b\u6297\u7684\u7edd\u5bf9\u503c\uff08\u5927\u5c0f\uff09\uff0c\u9700\u8fdb\u884c\u5982\u4e0b\u8ba1\u7b97\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(|Z_{total}|\u2008=\u2008\\sqrt{10\\,^2\u2008+\u2008(-96.2)^2}\u2008\u2248\u200896.7\\)<\/span><\/p>\n<p>\u8ba1\u7b97\u7ed3\u679c\u663e\u793a\uff0c\u963b\u6297\u5927\u5c0f\u7ea6\u4e3a96.7\u03a9\u3002\u53e6\u5916\uff0c\u7531\u4e8e\u7535\u6297\u5206\u91cf\u4e3a\u8d1f\u503c\uff0c\u8be5\u7535\u8def\u6574\u4f53\u5448\u73b0\u51fa\u5bb9\u6027\u7279\u6027\u3002<\/p>\n<h3 id=\"toc11\">\u5e76\u8054\u65f6\u7684\u8ba1\u7b97\u65b9\u6cd5<\/h3>\n<p>\u8ba1\u7b97\u5e76\u8054\u7535\u8def\u7684\u963b\u6297\u65f6\uff0c\u91c7\u7528\u7684\u65b9\u6cd5\u662f\u5c06\u5404\u963b\u6297\u5012\u6570\u76f8\u52a0\u540e\u53d6\u5176\u603b\u548c\u7684\u5012\u6570\u3002\u91c7\u7528\u8fd9\u79cd\u65b9\u6cd5\uff0c\u5373\u4f7f\u50cf\u5bb6\u7528\u63d2\u5ea7\u90a3\u6837\u5e76\u8054\u591a\u4e2a\u7535\u5668\u8bbe\u5907\u65f6\uff0c\u5176\u963b\u6297\u4e5f\u80fd\u8f7b\u677e\u8ba1\u7b97\u51fa\u6765\u3002\u5e76\u8054\u8fde\u63a5\u65f6\uff0c\u7531\u4e8e\u5404\u5143\u4ef6\u95f4\u76f8\u4e92\u5f71\u54cd\u8f83\u5c0f\uff0c\u56e0\u800c\u80fd\u591f\u540c\u65f6\u4f7f\u7528\u591a\u4e2a\u8bbe\u5907\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/12-parallel-impedance-calculation.png\" alt=\"\u5e76\u8054\u963b\u6297\u8ba1\u7b97\uff5c\u5408\u6210 1\/Z=\u03a3(1\/Zn)\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u5e76\u8054\u8fde\u63a5\u65f6\u7684\u603b\u963b\u6297\u503c\u53ef\u901a\u8fc7\u4e0b\u9762\u7684\u516c\u5f0f\u8868\u793a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\\displaystyle\\frac{1}{Z_{total}}=\\displaystyle\\frac{1}{Z_1}+\\displaystyle\\frac{1}{Z_2}+\\displaystyle\\frac{1}{Z_3} +\u22ef+\\displaystyle\\frac{1}{Z_n}=\\displaystyle\\sum \\frac{1}{Z_n}\\)<\/span><\/p>\n<p>\u5f53\u4ec5\u6709\u4e24\u4e2a\u963b\u6297\u5e76\u8054\u65f6\uff0c\u53ef\u91c7\u7528\u5982\u4e0b\u65b9\u6cd5\u7b80\u5355\u8ba1\u7b97\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_{total}=\\displaystyle\\frac{Z_1\u00d7Z_2}{Z_1+Z_2}\\)<\/span><\/p>\n<p>\u5728\u8ba1\u7b97\u590d\u6570\u963b\u6297\u65f6\uff0c\u9700\u8981\u8c28\u614e\u5730\u5c06\u5b9e\u90e8\u548c\u865a\u90e8\u5206\u5f00\u5904\u7406\u3002<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u6765\u8003\u8651\\(Z_1\\)=10+\\(j\\)20\u2009\u03a9\u548c\\(Z_2\\)=5\u2212\\(j\\)15\u2009\u03a9\u7684\u4e24\u4e2a\u5143\u4ef6\u5e76\u8054\u8fde\u63a5\u65f6\u7684\u5b9e\u9645\u8ba1\u7b97\u793a\u4f8b\u3002<\/p>\n<p>\u9996\u5148\uff0c\u6c42\u51fa\u5404\u963b\u6297\u7684\u5012\u6570\uff08\u5bfc\u7eb3\uff09\u3002<\/p>\n<p>\u5143\u4ef6<span class=\"u-ff-mathjax\">Z<\/span><sub>1<\/sub>\u7684\u5bfc\u7eb3\u53ef\u6309\u4e0b\u9762\u7684\u516c\u5f0f\u8ba1\u7b97\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Y_1=\\displaystyle\\frac{1}{Z_1}=\\displaystyle\\frac{1}{10+j20}=0.02-j0.04\\)<\/span><\/p>\n<p>\u6309\u540c\u6837\u65b9\u5f0f\u8ba1\u7b97\u5143\u4ef6\\(Z_2\\)\u7684\u5bfc\u7eb3\uff0c\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Y_2=\\displaystyle\\frac{1}{Z_2}=\\displaystyle\\frac{1}{5-j15}=0.02+j0.06\\)<\/span><\/p>\n<p>\u5c06\u8fd9\u4e9b\u5bfc\u7eb3\u76f8\u52a0\uff0c\u5373\u53ef\u6c42\u5f97\u6574\u4e2a\u7535\u8def\u7684\u603b\u5bfc\u7eb3\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Y_{total} =Y_1+Y_2=0.04+j0.02\\)<\/span><\/p>\n<p>\u6700\u7ec8\uff0c\u53d6\u8be5\u503c\u7684\u5012\u6570\u5373\u53ef\u5f97\u5230\u603b\u963b\u6297\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_{total}=\\displaystyle\\frac{1}{Y_{total}}=\\displaystyle\\frac{1}{0.04+j0.02}\\,=20-j10\\)<\/span><\/p>\n<p>\u8be5\u6570\u503c\u7684\u5927\u5c0f\uff08\u7edd\u5bf9\u503c\uff09\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(|Z_{total}|=\\sqrt{20\\,^2+(-10)^2}\\,\u224822.36\\)<\/span><\/p>\n<p>\u5982\u4e0a\u6240\u8ff0\uff0c\u5728\u5e76\u8054\u8fde\u63a5\u65f6\u5404\u5143\u4ef6\u7684\u5bfc\u7eb3\uff08\u5012\u6570\uff09\u4f1a\u76f8\u52a0\uff0c\u56e0\u6b64\u5bf9\u4e8e\u7eaf\u7535\u963b\u7535\u8def\u800c\u8a00\uff0c\u5408\u6210\u963b\u6297\u4e00\u5b9a\u4f1a\u51cf\u5c0f\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u5728\u542b\u6709\u865a\u6570\u6210\u5206\u65f6\uff0c\u7531\u4e8e\u7ed3\u679c\u4f1a\u56e0\u7535\u6297\u7b26\u53f7\u548c\u5927\u5c0f\u7684\u7ec4\u5408\u65b9\u5f0f\u800c\u5f02\uff0c\u56e0\u6b64\u5176\u5927\u5c0f\u672a\u5fc5\u603b\u5c0f\u4e8e\u5404\u5143\u4ef6\u963b\u6297\u3002<\/p>\n<h3 id=\"toc12\">\u5229\u7528\u590d\u6570\u5411\u91cf\u5408\u6210\u548c\u6234\u7ef4\u5357\u7b49\u6548\u7535\u8def\u8fdb\u884c\u7b80\u5316<\/h3>\n<p>\u4ea4\u6d41\u7535\u8def\u76f8\u8f83\u4e8e\u76f4\u6d41\u7535\u8def\uff0c\u5143\u4ef6\u95f4\u7684\u5173\u7cfb\u66f4\u4e3a\u590d\u6742\uff0c\u5982\u679c\u76f4\u63a5\u5206\u6790\u5c06\u4f1a\u5bfc\u81f4\u8ba1\u7b97\u8fc7\u7a0b\u7e41\u7410\u3002\u57fa\u4e8e\u4e0a\u8ff0\u4e32\u8054\u548c\u5e76\u8054\u65f6\u7684\u963b\u6297\u5408\u6210\u8ba1\u7b97\u65b9\u6cd5\uff0c\u4e0b\u9762\u5c06\u9610\u8ff0\u5982\u4f55\u8fd0\u7528\u8fd9\u4e9b\u65b9\u6cd5\u5c06\u6574\u4e2a\u7535\u8def\u7b80\u5316\u4e3a\u66f4\u7b80\u6d01\u7684\u7b49\u6548\u5f62\u5f0f\u3002<\/p>\n<p>\u672c\u793a\u4f8b\u7535\u8def\u7684\u5de5\u4f5c\u9891\u7387\u4e3a2kHz\u3002\u5c0620\u03a9\u7684\u7535\u963b\u548c5mH\u7684\u7535\u611f\u4e32\u8054\u8fde\u63a5\uff0c\u518d\u5c06\u8be5\u7ec4\u5408\u4e0e30\u03a9\u7684\u7535\u963b\u5e76\u8054\u8fde\u63a5\u3002\u7136\u540e\uff0c\u5728\u5e76\u8054\u7ed3\u6784\u4e4b\u540e\u53c8\u4e32\u8054\u4e86\u4e00\u4e2a2\u03bcF\u7684\u7535\u5bb9\uff0c\u5f62\u6210\u590d\u5408\u7535\u8def\u7ed3\u6784\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/13-complex-vector-combination-circuit.png\" alt=\"\u590d\u6570\u5411\u91cf\u5408\u6210\u7535\u8def\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u8ba1\u7b97\u8be5\u7535\u8def\u6240\u9700\u7684\u7535\u6297\uff0c\u5f97\u51fa\u7535\u611f\u5668\u7684\u7535\u6297\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(X_{L_1}=2\u03c0\u00d72000\u00d70.005=62.8\\)<\/span><\/p>\n<p>\u540c\u6837\u5730\uff0c\u8ba1\u7b97\u5f97\u51fa\u7535\u5bb9\u5668\u7684\u7535\u6297\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(X_{C_1} = \\displaystyle\\frac{1}{2\u03c0\u00d72000\u00d72\u00d710^{-6}} \\,= 39.8\\)<\/span><\/p>\n<p>\u6839\u636e\u4e0a\u8ff0\u7ed3\u679c\uff0c\u7528\u590d\u6570\u5411\u91cf\u8868\u793a\u5404\u5143\u4ef6\u7684\u963b\u6297\u65f6\uff0c20\u03a9\u7535\u963b\u4e3a20+\\(j\\)0\u2009\u03a9\uff0c\u7535\u611f\u4e3a\\(j\\)62.8\u2009\u03a9\uff0c\u5e76\u8054\u768430\u03a9\u7535\u963b\u4e3a30+\\(j\\)0\u03a9\uff0c\u4e32\u8054\u7684\u7535\u5bb9\u5219\u4e3a\u2212\\(j\\)39.8\u2009\u03a9\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5c06\u4e32\u8054\u768420\u03a9\u7535\u963b\u4e0e\u7535\u611f\u5408\u5e76\u8ba1\u7b97\uff0c\u5f97\u51fa\u5176\u603b\u963b\u6297\u4e3a20+\\(j\\)62.8\u2009\u03a9\u3002\u63a5\u4e0b\u6765\uff0c\u5c06\u6b64\u7ed3\u679c\u4e0e30\u03a9\u7535\u963b\u5e76\u8054\uff0c\u5176\u5408\u6210\u963b\u6297\u53ef\u901a\u8fc7\u4e0b\u9762\u7684\u516c\u5f0f\u6c42\u5f97\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_2=\\displaystyle\\frac{(Z_{R_1}+Z_L)Z_{R_2}}{(Z_{R_1}+Z_L)+Z_{R_2}}=\\displaystyle\\frac{(20+j62.8)\u00d730}{50+j62.8}\u224823.02+j8.77\\)<\/span><\/p>\n<p>\u6700\u540e\uff0c\u5c06\u7535\u5bb9\u5668\u7684\u963b\u6297\u4e32\u8054\u53e0\u52a0\u81f3\u4e0a\u8ff0\u5e76\u8054\u5408\u6210\u7ed3\u679c\uff0c\u4ece\u8d1f\u8f7d\u4fa7\u786e\u8ba4\u65f6\u7684\u603b\u5408\u6210\u963b\u6297\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_{total} =(23.02+j8.77)-j39.8=23.02-j31.03\\)<\/span><\/p>\n<p>\u8be5\u5408\u6210\u963b\u6297\u7684\u5927\u5c0f\u4e3a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(|Z_{total}|=\\sqrt{23.02\\,^2+(-31.03)\\,^2}\\quad\u224838.6\\)<\/span><\/p>\n<p>\u53e6\u5916\uff0c\u76f8\u4f4d\u89d2\u4e3a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u03b8={tan}^{-1}\\left(\\displaystyle\\frac{-31.03}{23.02}\\right)\u2248-53.4\u00b0\\)<\/span><\/p>\n<p>\u8d1f\u76f8\u4f4d\u89d2\u8868\u660e\u6574\u4e2a\u7535\u8def\u5448\u73b0\u5bb9\u6027\u7279\u6027\u3002<\/p>\n<p>\u5176\u4e2d\uff0c\u8ba1\u7b97\u51fa\u7684\u201c\u4ece\u8d1f\u8f7d\u7aef\u786e\u8ba4\u7684\u5408\u6210\u963b\u6297\u201d\uff0c\u53ef\u4f5c\u4e3a\u6234\u7ef4\u5357\u7b49\u6548\u7535\u8def\u4e2d\u7684\u963b\u6297\u4f7f\u7528\u3002\u5229\u7528\u8be5\u5408\u6210\u7ed3\u679c\uff0c\u82e5\u80fd\u53e6\u884c\u6c42\u5f97\u8f93\u5165\u7aef\u5f00\u8def\uff08\u5f00\u653e\u72b6\u6001\uff09\u65f6\u7684\u7535\u538b\uff08\u6234\u7ef4\u5357\u7535\u538b\uff09\uff0c\u5219\u539f\u672c\u7684\u590d\u6742\u7535\u8def\u53ef\u7b80\u5316\u4e3a\u7531\u5355\u4e00\u7535\u538b\u6e90\u548c\u4e00\u4e2a\u963b\u6297\u6784\u6210\u7684\u7b80\u6d01\u7b49\u6548\u7535\u8def\u3002\u901a\u8fc7\u4e0a\u8ff0\u6d41\u7a0b\uff0c\u80fd\u591f\u7b80\u5316\u590d\u6742\u4ea4\u6d41\u7535\u8def\u7684\u5206\u6790\u8fc7\u7a0b\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/14-ac-thevenin-equivalent-circuit.png\" alt=\"\u4ea4\u6d41\u7535\u8def\u4e2d\u7684\u6234\u7ef4\u5357\u7b49\u6548\u7535\u8def\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u5982\u679c\u80fd\u5c06\u4ea4\u6d41\u56de\u8def\u6574\u7406\u7b80\u5316\u4e3a\u6234\u7ef4\u5357\u7b49\u6548\u7535\u8def\uff0c\u5728\u8bbe\u8ba1\u9636\u6bb5\u8fdb\u884c\u5143\u4ef6\u589e\u52a0\u6216\u53d8\u66f4\u65f6\uff0c\u5c31\u65e0\u9700\u6bcf\u6b21\u90fd\u91cd\u65b0\u8ba1\u7b97\u6574\u4e2a\u56de\u8def\u4e86\u3002\u6b64\u5916\uff0c\u7531\u4e8e\u80fd\u591f\u9884\u5148\u8f7b\u677e\u9884\u6d4b\u8fde\u63a5\u8d1f\u8f7d\u65f6\u7684\u7535\u538b\u3001\u7535\u6d41\u53ca\u76f8\u4f4d\u53d8\u5316\u7b49\u53c2\u6570\uff0c\u8fd9\u6837\u65e2\u53ef\u51cf\u5c11\u8bbe\u8ba1\u5de5\u4f5c\u91cf\uff0c\u53c8\u80fd\u9ad8\u6548\u6784\u5efa\u51fa\u6ee1\u8db3\u76ee\u6807\u6027\u80fd\u7684\u7535\u8def\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5173\u4e8e\u76f4\u6d41\u7535\u8def\u4e2d\u6234\u7ef4\u5357\u5b9a\u7406\u7684\u8be6\u7ec6\u6982\u5ff5\uff0c\u5df2\u5728\u5176\u4ed6\u9875\u9762\u53e6\u884c\u4ecb\u7ecd\uff0c\u656c\u8bf7\u53c2\u8003\uff1a<\/p>\n<p><!-- \u30ea\u30f3\u30af --><\/p>\n<p><a href=\"https:\/\/techweb.rohm.co.jp\/product\/circuit-design\/electric-circuit-design\/24741\/\">\u6234\u7ef4\u5357\u5b9a\u7406\u8be6\u89e3\u9875\u9762<\/a><\/p>\n<h2 id=\"toc13\">\u963b\u6297\u5339\u914d\u4e0e\u4f20\u8f93\u7ebf\u8def<\/h2>\n<p>\u963b\u6297\u5339\u914d\u662f\u4e00\u79cd\u901a\u8fc7\u9002\u5f53\u8c03\u6574\u7535\u8def\u548c\u7cfb\u7edf\u4e2d\u5404\u5143\u7d20\u7684\u963b\u6297\u6765\u63d0\u9ad8\u4fe1\u53f7\u4f20\u8f93\u548c\u80fd\u91cf\u4f20\u8f93\u6548\u7387\u7684\u6280\u672f\u3002\u963b\u6297\u5339\u914d\uff0c\u53ef\u4ee5\u66f4\u5927\u7a0b\u5ea6\u5730\u6291\u5236\u4fe1\u53f7\u53cd\u5c04\u548c\u4e22\u5931\uff0c\u4f18\u5316\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n<h3 id=\"toc14\">\u8f93\u5165\/\u8f93\u51fa\u963b\u6297<\/h3>\n<p>\u5728\u7535\u8def\u8bbe\u8ba1\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u51fa\u73b0\u201c\u8f93\u5165\u963b\u6297\u201d\u548c\u201c\u8f93\u51fa\u963b\u6297\u201d\u8fd9\u4e24\u4e2a\u4e13\u4e1a\u672f\u8bed\u3002\u8f93\u5165\u963b\u6297\u662f\u6307\u7535\u8def\u4f5c\u4e3a\u4fe1\u53f7\u63a5\u6536\u7aef\u65f6\uff0c\u8868\u793a\u7535\u6d41\u6d41\u52a8\u53d7\u963b\u7a0b\u5ea6\u7684\u503c\u3002\u76f8\u53cd\uff0c\u8f93\u51fa\u963b\u6297\u5219\u8868\u793a\u4fe1\u53f7\u53d1\u9001\u7aef\u56fa\u6709\u7684\u7279\u6027\u3002\u9002\u5f53\u8c03\u6574\u8fd9\u4e9b\u53c2\u6570\uff0c\u5bf9\u4e8e\u5b9e\u73b0\u9ad8\u6548\u7684\u4fe1\u53f7\u4f20\u8f93\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u97f3\u4e50\u64ad\u653e\u5668\u4e0e\u8033\u673a\u662f\u5426\u5339\u914d\u826f\u597d\uff0c\u53d7\u8f93\u5165\u8f93\u51fa\u963b\u6297\u7684\u5173\u7cfb\u5f71\u54cd\u5f88\u5927\u3002<\/p>\n<p><!-- \u753b\u50cf --><!-- \u540c\u3058\u540d\u524d\u306b\u3059\u308b --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/impedance_f06_02.png\" alt=\"\u8f93\u5165\u8f93\u51fa\u963b\u6297\u6982\u5ff5\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u8f93\u5165\u963b\u6297\uff08\\(Z_{IN}\\)\uff09\u662f\u6307\u4ece\u4fe1\u53f7\u6e90\u7aef\u786e\u8ba4\u65f6\u7684\u8f93\u5165\u5f15\u811a\u7684\u963b\u6297\u7279\u6027\u3002\u8be5\u6570\u503c\u8d8a\u9ad8\uff0c\u8d8a\u80fd\u907f\u514d\u5bf9\u4fe1\u53f7\u6e90\u9020\u6210\u989d\u5916\u8d1f\u62c5\uff0c\u53ef\u9632\u6b62\u8f93\u5165\u4fe1\u53f7\u5931\u771f\u6216\u635f\u8017\u3002\u4ece\u8ba1\u7b97\u7406\u8bba\u4e0a\u8bb2\uff0c\u5b83\u662f\u7531\u8f93\u5165\u7535\u538b\uff08\\(V_{IN}\\)\uff09\u548c\u8f93\u5165\u7535\u6d41\uff08\\(I_{IN}\\)\uff09\u7684\u6bd4\u503c\u6240\u5b9a\u4e49\u7684\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_{IN} =\\displaystyle\\frac{V_{IN}}{I_{IN}}\\)<\/span><\/p>\n<p>\u6b64\u65f6\uff0c\u5982\u679c\u662f\u4ea4\u6d41\u4fe1\u53f7\uff0c\u5176\u503c\u53ef\u80fd\u4f1a\u56e0\u9891\u7387\u4e0d\u540c\u800c\u53d1\u751f\u53d8\u5316\u3002<\/p>\n<p>\u800c\u8f93\u51fa\u963b\u6297\u662f\u6307\u8bbe\u5907\u7684\u5185\u90e8\u963b\u6297\uff08\u901a\u5e38\u8868\u793a\u4e3a\u590d\u6570\\(Z\\)=\\(R\\)+\\(jX\\)\uff0c\u5176\u4e2d\\(X\\)\u4e3a\u5408\u6210\u7535\u6297\uff0c\u5f53\\(X\\)&gt;0\u65f6\u4e3a\u611f\u6027\uff0c\u5f53\\(X\\)&lt;0\u65f6\u5219\u4e3a\u5bb9\u6027\uff09\u3002\u8be5\u503c\u51b3\u5b9a\u7740\u4fe1\u53f7\u6e90\u5411\u8d1f\u8f7d\u4f9b\u7535\u7684\u6548\u7387\u9ad8\u4f4e\u3002\u5728\u8ba1\u7b97\u8f93\u51fa\u963b\u6297\u65f6\uff0c\u9700\u4f7f\u7528\u672a\u8fde\u63a5\u8d1f\u8f7d\u65f6\u7684\u5f00\u8def\u7535\u538b\uff08\\(V_{open}\\)\uff09\u3001\u5b9e\u9645\u8fde\u63a5\u8d1f\u8f7d\u65f6\u7684\u8d1f\u8f7d\u7535\u538b\uff08\\(V_{load}\\)\uff09\u4ee5\u53ca\u8d1f\u8f7d\u7535\u6d41\uff08\\(I_{load}\\)\uff09\u8fdb\u884c\u8ba1\u7b97\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_{OUT} = \\displaystyle\\frac{V_{open}-V_{load}}{I_{load}}\\)<\/span><\/p>\n<p>\u5728\u8003\u8651\u8fd9\u4e9b\u8f93\u5165\u8f93\u51fa\u963b\u6297\u65f6\uff0c\u7535\u8def\u8bbe\u8ba1\u4e2d\u4f1a\u8fd0\u7528\u4e00\u79cd\u79f0\u4e3a\u201c\u6700\u5927\u529f\u7387\u4f20\u8f93\u5b9a\u7406\u201d\u7684\u6982\u5ff5\u3002\u6839\u636e\u8be5\u5b9a\u7406\uff0c\u5f53\u8d1f\u8f7d\u963b\u6297\\(Z_L\\)\u4e0e\u4fe1\u53f7\u6e90\u4fa7\u7684\u8f93\u51fa\u963b\u6297\\(Z_{OUT}\\)\u5f62\u6210\u590d\u5171\u8f6d\\(Z_{OUT}^*\\)\u5173\u7cfb\u65f6\uff0c\u8d1f\u8f7d\u6d88\u8017\u7684\u529f\u7387\u5c06\u8fbe\u5230\u6700\u5927\u503c\u3002\u8fd9\u4e00\u5173\u7cfb\u53ef\u901a\u8fc7\u4e0b\u9762\u7684\u516c\u5f0f\u7b80\u5355\u8868\u793a\uff08\u203b\\(Z_{OUT}^*\\)\u8868\u793a\\(Z_{OUT}\\)\u7684\u590d\u5171\u8f6d\uff1a\u82e5\\(z\\)=\\(a\\)+\\(jb\\)\uff0c\u5219\u5176\u590d\u5171\u8f6d\u4e3a\\(z\\)=\\(a\\)\u2212\\(jb\\)\uff09\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_L=Z_{OUT}^*\\)<\/span><\/p>\n<p>\u6b64\u5916\uff0c\u4e3a\u4fbf\u4e8e\u7406\u89e3\uff0c\u5047\u8bbe\u865a\u90e8\u76f8\u4e92\u62b5\u6d88\uff08\u6216\u53ef\u5ffd\u7565\uff09\u7684\u60c5\u51b5\uff0c\u4ec5\u7528\u7535\u963b\u5206\u91cf\\(R_{OUT}\\)\u3001\\(R_{IN}\\)\u8868\u793a\u65f6\uff0c\u8d1f\u8f7d\u4fa7\u6d88\u8017\u7684\u529f\u7387\uff08\\(P\\)\uff09\u53ef\u7531\u4e0b\u9762\u7684\u516c\u5f0f\u7ed9\u51fa\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(P=V_{IN}^2 \\displaystyle\\frac{R_{IN}}{(R_{OUT}+R_{IN})^2}\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c\\(V_{IN}\\)\u8868\u793a\u65bd\u52a0\u5728\u8f93\u5165\u4fa7\u7684\u7535\u538b\uff0c\\(R_{IN}\\)\u8868\u56db\u8d1f\u8f7d\u4fa7\uff08\u8f93\u5165\u4fa7\uff09\u7684\u7535\u963b\u5206\u91cf\uff0c\\(R_{OUT}\\)\u5219\u8868\u793a\u4fe1\u53f7\u6e90\u4fa7\uff08\u8f93\u51fa\u4fa7\uff09\u7684\u7535\u963b\u5206\u91cf\u3002\u7531\u8be5\u516c\u5f0f\u53ef\u77e5\uff0c\u5f53\u8f93\u5165\u4fa7\u4e0e\u8f93\u51fa\u4fa7\u7684\u7535\u963b\u503c\u76f8\u7b49\u65f6\uff08\\(R_{IN}\\)=\\(R_{OUT}\\)\uff09\uff0c\u8d1f\u8f7d\u6d88\u8017\u7684\u529f\u7387\u5c06\u8fbe\u5230\u6700\u5927\u503c\u3002\u7136\u800c\uff0c\u8fd9\u4e00\u6761\u4ef6\uff08\u5171\u8f6d\u5339\u914d\uff09\u4f1a\u5bfc\u81f4\u4fe1\u53f7\u6e90\u5185\u963b\u6d88\u8017\u540c\u7b49\u529f\u7387\uff0c\u6545\u529f\u7387\u4f20\u8f93\u6548\u7387\u88ab\u9650\u5236\u572850%\u3002\u56e0\u6b64\uff0c\u5171\u8f6d\u5339\u914d\u5bb9\u6613\u8fbe\u5230\u8bbe\u8ba1\u76ee\u6807\u7684\u60c5\u51b5\uff0c\u5f80\u5f80\u662f\u90a3\u4e9b\u6bd4\u8d77\u6548\u7387\uff0c\u66f4\u4f18\u5148\u8003\u8651\u964d\u4f4e\u53cd\u5c04\u548c\u5b9e\u73b0\u89c4\u5b9a\u963b\u6297\u73af\u5883\u5339\u914d\uff08\u4f8b\u5982RF\u7535\u8def\u3001\u4f20\u8f93\u7ebf\u8def\u3001\u8ba1\u91cf\u7cfb\u7edf\u4e2d\u768450\u03a9\/75\u03a9\u7cfb\u7edf\u963b\u6297\u7b49\uff09\u7684\u5e94\u7528\u573a\u666f\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u5728\u97f3\u54cd\u7ebf\u8def\u8fde\u63a5\u548c\u626c\u58f0\u5668\u9a71\u52a8\u4e2d\uff0c\u5176\u76ee\u6807\u5f80\u5f80\u5e76\u975e\u8ffd\u6c42\u6700\u5927\u529f\u7387\uff0c\u800c\u662f\u66f4\u6ce8\u91cd\u7535\u538b\u4f20\u8f93\u3001\u9891\u7387\u7279\u6027\u53ca\u5236\u52a8\uff08\u963b\u5c3c\uff09\u6548\u679c\uff0c\u9700\u6ce8\u610f\u5176\u8bbe\u8ba1\u7406\u5ff5\u4e0a\u7684\u5dee\u5f02\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/03\/16-impedance-matching-example.png\" alt=\"\u963b\u6297\u5339\u914d\u793a\u4f8b\" width=\"700\" height=\"394\" \/><\/p>\n<p>\u5728\u5b9e\u9645\u7684\u7535\u8def\u8bbe\u8ba1\u4e2d\uff0c\u4f1a\u5145\u5206\u8003\u8651\u5230\u4e0a\u8ff0\u963b\u6297\u5e73\u8861\u8c03\u6574\uff08\u963b\u6297\u5339\u914d\uff09\u56e0\u7d20\u6765\u8fdb\u884c\u8bbe\u8ba1\u3002\u5c24\u5176\u662f\u5728\u97f3\u54cd\u8bbe\u5907\u7684\u4fe1\u53f7\u4f20\u8f93\u4e2d\uff0c\u76f8\u6bd4\u6700\u5927\u529f\u7387\u4f20\u8f93\uff0c\u901a\u5e38\u66f4\u6ce8\u91cd\u4e0d\u964d\u4f4e\u7535\u538b\uff08\u4fe1\u53f7\u6e90\u51e0\u4e4e\u65e0\u8d1f\u8f7d\uff09\u7684\u201c\u7535\u538b\u4f20\u8f93\uff08\u6865\u63a5\u65b9\u5f0f\uff09\u201d\u3002\u4f8b\u5982\uff0c\u5c06\u9ea6\u514b\u98ce\u7b49\u8f93\u51fa\u963b\u6297\u8f83\u4f4e\uff08\u7ea650\uff5e600\u03a9\uff09\u7684\u8bbe\u5907\u8fde\u63a5\u81f3\u8f93\u5165\u963b\u6297\u8f83\u9ad8\uff0810k\u03a9\u4ee5\u4e0a\uff09\u7684\u97f3\u9891\u653e\u5927\u5668\u65f6\uff0c\u901a\u8fc7\u4f7f\u8f93\u5165\u4fa7\u4fdd\u6301\u8db3\u591f\u9ad8\u7684\u963b\u6297\uff0c\u53ef\u4ee5\u51e0\u4e4e\u4e0d\u964d\u4f4e\u4fe1\u53f7\u6e90\u7535\u538b\uff0c\u4ece\u800c\u53ef\u6291\u5236\u5931\u771f\u548c\u635f\u8017\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5f53\u529f\u7387\u653e\u5927\u5668\u9a71\u52a8\u626c\u58f0\u5668\uff084\uff5e16\u03a9\uff09\u65f6\uff0c\u6bd4\u8d77\u201c\u4f7f\u653e\u5927\u5668\u548c\u626c\u58f0\u5668\u7684\u963b\u6297\u63a5\u8fd1\u201d\uff0c\u5c06\u653e\u5927\u5668\u7684\u8f93\u51fa\u963b\u6297\u5145\u5206\u964d\u4f4e\uff0c\u4ee5\u5b9e\u73b0\u5bf9\u626c\u58f0\u5668\u7684\u7535\u538b\u9a71\u52a8\u66f4\u4e3a\u91cd\u8981\u3002\u8f93\u51fa\u963b\u6297\u8d8a\u4f4e\uff0c\u8d1f\u8f7d\u963b\u6297\u53d8\u5316\u5bf9\u8f93\u51fa\u7535\u538b\u7684\u5f71\u54cd\u5c31\u8d8a\u5c0f\uff0c\u8fd9\u6709\u52a9\u4e8e\u6539\u5584\u626c\u58f0\u5668\u7684\u5236\u52a8\uff08\u963b\u5c3c\uff09\u6548\u679c\u548c\u7a33\u5b9a\u9891\u7387\u54cd\u5e94\u6027\u80fd\u3002<\/p>\n<p>\u7531\u6b64\u53ef\u89c1\uff0c\u7406\u89e3\u8f93\u5165\u8f93\u51fa\u963b\u6297\u7684\u6982\u5ff5\u5e76\u9002\u5f53\u8c03\u6574\uff0c\u662f\u9ad8\u8d28\u91cf\u7535\u8def\u8bbe\u8ba1\u7684\u91cd\u8981\u56e0\u7d20\u3002<\/p>\n<h2 id=\"toc15\">\u963b\u6297\u6d4b\u91cf\u65b9\u6cd5\u548c\u6545\u969c\u6392\u9664<\/h2>\n<p>\u5373\u4fbf\u662f\u6309\u7167\u7406\u8bba\u8bbe\u8ba1\u7684\u7535\u8def\uff0c\u5728\u5b9e\u9645\u901a\u7535\u6d4b\u8bd5\u65f6\u4e5f\u53ef\u80fd\u65e0\u6cd5\u83b7\u5f97\u9884\u671f\u6570\u503c\u3002\u963b\u6297\u662f\u63a2\u7a76\u504f\u5dee\u4e3b\u56e0\u7684\u91cd\u8981\u7ebf\u7d22\uff0c\u4f46\u5176\u503c\u5bf9\u6d4b\u91cf\u65b9\u6cd5\u548c\u73af\u5883\u6761\u4ef6\u975e\u5e38\u654f\u611f\u3002\u672c\u8282\u5c06\u4ecb\u7ecd\u6d4b\u91cf\u7684\u5fc5\u8981\u6027\u3001\u5e38\u7528\u6d4b\u91cf\u4eea\u5668\u4ee5\u53ca\u6d4b\u91cf\u8fc7\u7a0b\u4e2d\u5bb9\u6613\u51fa\u73b0\u7684\u95ee\u9898\u3002<\/p>\n<h3 id=\"toc16\">\u6d4b\u91cf\u7684\u5fc5\u8981\u6027<\/h3>\n<p>\u5728\u8bbe\u8ba1\u9636\u6bb5\u8ba1\u7b97\u5f97\u51fa\u7684\u963b\u6297\u503c\uff0c\u975e\u5e38\u5bb9\u6613\u56e0\u5143\u5668\u4ef6\u672c\u8eab\u7684\u6ce2\u52a8\u3001\u5e03\u7ebf\u7684\u5bc4\u751f\u5206\u91cf\u3001\u6e29\u6e7f\u5ea6\u7b49\u73af\u5883\u6761\u4ef6\u7684\u53d8\u5316\u800c\u53d1\u751f\u6ce2\u52a8\u3002\u53ea\u6709\u5b9e\u6d4b\u624d\u786e\u8ba4\u7535\u8def\u7684\u771f\u5b9e\u7279\u6027\u5e76\u627e\u51fa\u8bef\u5dee\u56e0\u7d20\u3002\u4ee5\u6d4b\u91cf\u7ed3\u679c\u4e3a\u4f9d\u636e\uff0c\u53ef\u5bf9\u5143\u5668\u4ef6\u4ef6\u9009\u578b\u548c\u8d70\u7ebf\u65b9\u6848\u8fdb\u884c\u4f18\u5316\u8c03\u6574\uff0c\u4ece\u800c\u5207\u5b9e\u4fdd\u969c\u6210\u54c1\u7684\u8fd0\u884c\u7a33\u5b9a\u6027\u3002<\/p>\n<h3 id=\"toc17\">\u6d4b\u91cf\u65b9\u5f0f\u5206\u7c7b<\/h3>\n<p>\u8981\u5728\u4f4e\u9891\u8303\u56f4\u5185\u5feb\u901f\u786e\u8ba4\u5355\u4e2a\u5143\u5668\u4ef6\u7684\u53c2\u6570\u503c\u65f6\uff0cLCR\u6d4b\u8bd5\u4eea\u975e\u5e38\u5b9e\u7528\u3002\u82e5\u8981\u8986\u76d6\u66f4\u9ad8\u9891\u6bb5\u5e76\u6355\u6349\u7ec6\u5fae\u53d8\u5316\uff0c\u963b\u6297\u5206\u6790\u4eea\u53ef\u5c3d\u663e\u4f18\u52bf\u3002\u5728\u8bc4\u4f30\u6570GHz\u9891\u6bb5\u7684\u4f20\u8f93\u7ebf\u8def\u548c\u5929\u7ebf\u65f6\uff0c\u77e2\u91cf\u7f51\u7edc\u5206\u6790\u4eea\u4e0d\u53ef\u6216\u7f3a\u3002\u6839\u636e\u76ee\u6807\u9891\u6bb5\u548c\u6240\u9700\u7cbe\u5ea6\uff0c\u9009\u62e9\u5408\u9002\u7684\u6d4b\u91cf\u4eea\u5668\u5c06\u76f4\u63a5\u5f71\u54cd\u6d4b\u91cf\u7ed3\u679c\u7684\u51c6\u786e\u6027\u3002<\/p>\n<h3 id=\"toc18\">\u6d4b\u91cf\u65f6\u7684\u5e38\u89c1\u95ee\u9898<\/h3>\n<p>\u6d4b\u91cf\u503c\u51fa\u73b0\u6ce2\u52a8\u65f6\uff0c\u53ef\u80fd\u5b58\u5728\u63a2\u5934\u6216\u5939\u5177\u63a5\u89e6\u4e0d\u826f\u7684\u60c5\u51b5\u3002\u82e5\u7aef\u5b50\u751f\u9508\u6216\u5939\u5b50\u677e\u52a8\uff0c\u63a5\u89e6\u7535\u963b\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u5bfc\u81f4\u6d4b\u91cf\u503c\u4e0d\u7a33\u5b9a\u3002\u53e6\u5916\uff0c\u5728\u6d4b\u91cf\u9ad8\u589e\u76ca\u653e\u5927\u5668\u6216\u9ad8\u9891\u6a21\u5757\u65f6\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u6d4b\u91cf\u7cfb\u7edf\u632f\u8361\u7684\u60c5\u51b5\u3002\u6b64\u5916\uff0c\u5468\u8fb9\u7535\u78c1\u566a\u58f0\u548c\u6e29\u5ea6\u53d8\u5316\u7684\u5f71\u54cd\u540c\u6837\u4e0d\u5bb9\u5ffd\u89c6\u3002\u901a\u8fc7\u5145\u5206\u5c4f\u853d\u6d4b\u91cf\u4eea\u5668\u3001\u7f29\u77ed\u7ebf\u4f53\u957f\u5ea6\u5e76\u4fdd\u6301\u73af\u5883\u6761\u4ef6\u6052\u5b9a\uff0c\u53ef\u4ee5\u907f\u514d\u5f88\u591a\u95ee\u9898\u3002<\/p>\n<h2 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href=\"https:\/\/pages.wfjydl.com\/Tech_download25_CN.html\">\u4e0b\u8f7d<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"\u963b\u6297\u662f\u6307\u5728\u4ea4\u6d41\u7535\u8def\u4e2d\u7535\u538b\u4e0e\u7535\u6d41\u4e4b\u6bd4\uff0c\u7535\u963b\u4e5f\u662f\u963b\u6297\u7684\u4e00\u79cd\u3002\u5728\u7406\u60f3\u7535\u963b\u4e2d\uff0c\\(Z\\) = \\(R\\)\u4e14\u4e0d\u53d7\u9891\u7387\u5f71\u54cd\u3002\u4f46\u5728\u5305\u542b\u7ebf\u5708\u6216\u7535\u5bb9\u5668\u7684\u4e00\u822c\u7535\u8def\u4e2d\uff0c\u7531\u4e8e\u7535\u6297\u5206\u91cf\u4f1a\u968f\u9891\u7387\u53d8\u5316\uff0c\u56e0\u6b64\u963b\u6297\u4e5f\u4f1a\u5b58\u5728\u9891\u7387\u4f9d\u8d56\u6027\u3002\u4ee5\u6211\u4eec\u719f\u6089\u7684\u8033\u673a\u4e0e\u653e 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