阻抗如何计算 如何计算阻抗？
\u963b\u6297\u8ba1\u7b97\u516c\u5f0f\u963b\u6297\uff08Impedance\uff09\u662f\u7535\u8def\u4e2d\u5bf9\u4ea4\u6d41\u4fe1\u53f7\u6d41\u52a8\u7684\u963b\u529b\uff0c\u901a\u5e38\u7528\u7b26\u53f7 Z \u8868\u793a\u3002\u963b\u6297\u7684\u8ba1\u7b97\u516c\u5f0f\u6839\u636e\u7535\u8def\u7684\u4e0d\u540c\u7c7b\u578b\u548c\u5143\u4ef6\u7684\u4e0d\u540c\u800c\u6709\u6240\u4e0d\u540c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7535\u8def\u5143\u4ef6\u7684\u963b\u6297\u8ba1\u7b97\u516c\u5f0f\uff1a
1. \u7535\u963b\uff08Resistor\uff09:
\u5bf9\u4e8e\u7eaf\u963b\u6027\u8d1f\u8f7d\uff0c\u5176\u963b\u6297\u7b49\u4e8e\u7535\u963b\u7684\u963b\u503c\uff1a
Z = R
2. \u7535\u611f\uff08Inductor\uff09:
\u5bf9\u4e8e\u4e00\u4e2a\u7535\u611f\u5143\u4ef6\uff0c\u5176\u963b\u6297\u4e0e\u9891\u7387\u76f8\u5173\uff1a
Z = j\u03c9L
\u5176\u4e2d\uff0cj \u662f\u865a\u6570\u5355\u4f4d\uff0c\u03c9 \u662f\u89d2\u9891\u7387\uff0cL \u662f\u7535\u611f\u7684\u503c\u3002
3. \u7535\u5bb9\uff08Capacitor\uff09:
\u5bf9\u4e8e\u4e00\u4e2a\u7535\u5bb9\u5143\u4ef6\uff0c\u5176\u963b\u6297\u4e5f\u4e0e\u9891\u7387\u76f8\u5173\uff1a
Z = 1 / (j\u03c9C)
\u5176\u4e2d\uff0cj \u662f\u865a\u6570\u5355\u4f4d\uff0c\u03c9 \u662f\u89d2\u9891\u7387\uff0cC \u662f\u7535\u5bb9\u7684\u503c\u3002
4. \u5e76\u8054\u7535\u963b\uff08Parallel Resistor\uff09:
\u5bf9\u4e8e\u591a\u4e2a\u5e76\u8054\u8fde\u63a5\u7684\u7535\u963b\u5143\u4ef6\uff0c\u5176\u603b\u963b\u6297\u53ef\u4ee5\u901a\u8fc7\u6c42\u5176\u963b\u6297\u7684\u5012\u6570\u4e4b\u548c\u518d\u53d6\u5012\u6570\u5f97\u5230\uff1a
1/Z = 1/R1 + 1/R2 + ... + 1/Rn
5. \u4e32\u8054\u7535\u963b\uff08Series Resistor\uff09:
\u5bf9\u4e8e\u591a\u4e2a\u4e32\u8054\u8fde\u63a5\u7684\u7535\u963b\u5143\u4ef6\uff0c\u5176\u603b\u963b\u6297\u53ef\u4ee5\u901a\u8fc7\u5c06\u5176\u963b\u6297\u503c\u76f8\u52a0\u5f97\u5230\uff1a
Z = R1 + R2 + ... + Rn
\u8fd9\u4e9b\u662f\u4e00\u4e9b\u5e38\u89c1\u7535\u8def\u5143\u4ef6\u7684\u963b\u6297\u8ba1\u7b97\u516c\u5f0f\uff0c\u7528\u4e8e\u8ba1\u7b97\u4ea4\u6d41\u7535\u8def\u4e2d\u7684\u963b\u6297\u3002\u5177\u4f53\u7684\u963b\u6297\u8ba1\u7b97\u8fd8\u53d6\u51b3\u4e8e\u7535\u8def\u7684\u590d\u6742\u6027\u548c\u5143\u4ef6\u7684\u7ec4\u5408\u65b9\u5f0f\u3002\u5bf9\u4e8e\u66f4\u590d\u6742\u7684\u7535\u8def\uff0c\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u66f4\u590d\u6742\u7684\u516c\u5f0f\u6216\u5de5\u5177\u8fdb\u884c\u8ba1\u7b97\u3002
\u963b\u6297\u8ba1\u7b97\u65b9\u6cd5
1. \u4e32\u8054/\u5e76\u8054\u7535\u963b\u7684\u8ba1\u7b97\uff1a
\u2605 \u5982\u679c\u7535\u8def\u4e2d\u5b58\u5728\u591a\u4e2a\u4e32\u8054\u8fde\u63a5\u7684\u7535\u963b\u5143\u4ef6\uff0c\u53ef\u4ee5\u5c06\u5b83\u4eec\u7684\u963b\u6297\u503c\u76f8\u52a0\u5f97\u5230\u603b\u963b\u6297\u3002
\u2605 \u5982\u679c\u7535\u8def\u4e2d\u5b58\u5728\u591a\u4e2a\u5e76\u8054\u8fde\u63a5\u7684\u7535\u963b\u5143\u4ef6\uff0c\u53ef\u4ee5\u5c06\u5b83\u4eec\u7684\u963b\u6297\u7684\u5012\u6570\u76f8\u52a0\u518d\u53d6\u5012\u6570\u5f97\u5230\u603b\u963b\u6297\u3002
2. \u7535\u611f\u548c\u7535\u5bb9\u7684\u8ba1\u7b97\uff1a
\u2605\u5bf9\u4e8e\u7535\u611f\u5143\u4ef6\uff0c\u5176\u963b\u6297\u4e3a j\u03c9L\uff0c\u5176\u4e2d j \u662f\u865a\u6570\u5355\u4f4d\uff0c\u03c9 \u662f\u89d2\u9891\u7387\uff0cL \u662f\u7535\u611f\u7684\u503c\u3002
\u2605\u5bf9\u4e8e\u7535\u5bb9\u5143\u4ef6\uff0c\u5176\u963b\u6297\u4e3a 1 / (j\u03c9C)\uff0c\u5176\u4e2d j \u662f\u865a\u6570\u5355\u4f4d\uff0c\u03c9 \u662f\u89d2\u9891\u7387\uff0cC \u662f\u7535\u5bb9\u7684\u503c\u3002
3. \u590d\u6742\u7535\u8def\u7684\u8ba1\u7b97\uff1a
\u5bf9\u4e8e\u590d\u6742\u7684\u7535\u8def\uff0c\u53ef\u4ee5\u4f7f\u7528\u57fa\u5c14\u970d\u592b\u5b9a\u5f8b\u3001\u6b27\u59c6\u5b9a\u5f8b\u4ee5\u53ca\u5176\u4ed6\u76f8\u5173\u5b9a\u5f8b\u548c\u516c\u5f0f\u6765\u8ba1\u7b97\u7535\u8def\u4e2d\u5404\u4e2a\u5143\u4ef6\u7684\u7535\u538b\u3001\u7535\u6d41\u548c\u963b\u6297\u3002\u8fd9\u901a\u5e38\u6d89\u53ca\u4f7f\u7528\u7f51\u7edc\u5206\u6790\u65b9\u6cd5\u3001\u76f8\u91cf\u6cd5\u548c\u590d\u6570\u8fd0\u7b97\u7b49\u6280\u672f\u3002
4. \u4f7f\u7528\u7535\u8def\u5206\u6790\u5de5\u5177\u8f6f\u4ef6\uff1a
\u5bf9\u4e8e\u66f4\u590d\u6742\u7684\u7535\u8def\uff0c\u53ef\u4ee5\u501f\u52a9\u7535\u8def\u5206\u6790\u5de5\u5177\u8f6f\u4ef6\uff08\u5982SPICE\u8f6f\u4ef6\uff09\u8fdb\u884c\u7535\u8def\u5206\u6790\u548c\u963b\u6297\u8ba1\u7b97\u3002\u8fd9\u4e9b\u5de5\u5177\u4f7f\u7528\u6570\u503c\u65b9\u6cd5\u548c\u4eff\u771f\u6280\u672f\u6765\u6a21\u62df\u7535\u8def\u884c\u4e3a\uff0c\u5e76\u63d0\u4f9b\u8be6\u7ec6\u7684\u7535\u538b\u3001\u7535\u6d41\u548c\u963b\u6297\u7b49\u53c2\u6570\u3002
\u963b\u6297\u7684\u8ba1\u7b97\u65b9\u6cd5\u4f1a\u6839\u636e\u7535\u8def\u7684\u7279\u6027\u548c\u5143\u4ef6\u7684\u7c7b\u578b\u800c\u6709\u6240\u4e0d\u540c\u3002\u5bf9\u4e8e\u66f4\u590d\u6742\u7684\u7535\u8def\uff0c\u53ef\u80fd\u9700\u8981\u4f7f\u7528\u66f4\u9ad8\u7ea7\u7684\u6570\u5b66\u548c\u5206\u6790\u65b9\u6cd5\uff0c\u4f8b\u5982\u62c9\u666e\u62c9\u65af\u53d8\u6362\u3001\u9891\u57df\u5206\u6790\u3001\u77e9\u9635\u5206\u6790\u7b49\u3002\u56e0\u6b64\uff0c\u5728\u5177\u4f53\u8ba1\u7b97\u963b\u6297\u4e4b\u524d\uff0c\u5efa\u8bae\u5148\u4e86\u89e3\u7535\u8def\u7684\u7279\u6027\u548c\u5143\u4ef6\u7684\u963b\u6297\u516c\u5f0f\uff0c\u5e76\u9009\u62e9\u5408\u9002\u7684\u8ba1\u7b97\u65b9\u6cd5\u6216\u5de5\u5177\u8fdb\u884c\u5206\u6790\u3002
\u963b\u6297\u8ba1\u7b97\u516c\u5f0f\u5728\u7535\u8def\u5206\u6790\u4e2d\u5e94\u7528
1. \u7535\u8def\u5206\u6790
\u901a\u8fc7\u8ba1\u7b97\u7535\u8def\u5143\u4ef6\u7684\u963b\u6297\uff0c\u53ef\u4ee5\u786e\u5b9a\u7535\u8def\u4e2d\u7684\u7535\u538b\u3001\u7535\u6d41\u548c\u529f\u7387\u7b49\u53c2\u6570\u3002\u8fd9\u6709\u52a9\u4e8e\u7406\u89e3\u7535\u8def\u7684\u884c\u4e3a\u3001\u6027\u80fd\u548c\u7279\u6027\u3002
2. \u6ee4\u6ce2\u5668\u8bbe\u8ba1
\u963b\u6297\u8ba1\u7b97\u516c\u5f0f\u53ef\u7528\u4e8e\u8bbe\u8ba1\u6ee4\u6ce2\u5668\u7535\u8def\uff0c\u4ee5\u5b9e\u73b0\u5bf9\u4e0d\u540c\u9891\u7387\u4fe1\u53f7\u7684\u9009\u62e9\u6027\u8870\u51cf\u6216\u589e\u5f3a\u3002\u901a\u8fc7\u8ba1\u7b97\u7535\u611f\u548c\u7535\u5bb9\u7684\u963b\u6297\uff0c\u53ef\u4ee5\u9009\u62e9\u5408\u9002\u7684\u5143\u4ef6\u503c\u6765\u6ee1\u8db3\u7279\u5b9a\u7684\u9891\u7387\u54cd\u5e94\u8981\u6c42\u3002
3. \u5339\u914d\u7f51\u7edc\u8bbe\u8ba1
\u963b\u6297\u5339\u914d\u662f\u4e3a\u4e86\u6700\u5927\u9650\u5ea6\u4f20\u8f93\u4fe1\u53f7\u529f\u7387\u800c\u8c03\u6574\u7535\u8def\u4e2d\u7684\u963b\u6297\uff0c\u4ee5\u4f7f\u6e90\u548c\u8d1f\u8f7d\u4e4b\u95f4\u7684\u963b\u6297\u5339\u914d\u3002\u901a\u8fc7\u963b\u6297\u8ba1\u7b97\u516c\u5f0f\uff0c\u53ef\u4ee5\u8bbe\u8ba1\u5339\u914d\u7f51\u7edc\uff0c\u4ee5\u5b9e\u73b0\u6700\u4f73\u7684\u4fe1\u53f7\u4f20\u8f93\u6548\u679c\u3002
4. \u7535\u8def\u7a33\u5b9a\u6027\u5206\u6790
\u963b\u6297\u8ba1\u7b97\u5e38\u7528\u4e8e\u8bc4\u4f30\u7535\u8def\u7684\u7a33\u5b9a\u6027\uff0c\u7279\u522b\u662f\u5728\u653e\u5927\u5668\u548c\u632f\u8361\u5668\u8bbe\u8ba1\u4e2d\u3002\u901a\u8fc7\u8ba1\u7b97\u8f93\u5165\u8f93\u51fa\u7aef\u53e3\u7684\u963b\u6297\uff0c\u53ef\u4ee5\u5206\u6790\u7535\u8def\u4e2d\u7684\u53cd\u9988\u8def\u5f84\u548c\u7a33\u5b9a\u6027\u7279\u6027\u3002
5. \u9ad8\u9891\u7535\u8def\u5206\u6790
\u5728\u9ad8\u9891\u7535\u8def\u4e2d\uff0c\u963b\u6297\u8ba1\u7b97\u516c\u5f0f\u5bf9\u4e8e\u5206\u6790\u4f20\u8f93\u7ebf\u3001\u5929\u7ebf\u548c\u5c04\u9891\u7535\u8def\u7b49\u8d77\u7740\u91cd\u8981\u4f5c\u7528\u3002\u901a\u8fc7\u8ba1\u7b97\u4f20\u8f93\u7ebf\u7684\u7279\u6027\u963b\u6297\uff0c\u53ef\u4ee5\u786e\u5b9a\u4fe1\u53f7\u7684\u4f20\u8f93\u548c\u53cd\u5c04\u7279\u6027\uff0c\u4ece\u800c\u4f18\u5316\u9ad8\u9891\u7535\u8def\u7684\u6027\u80fd\u3002
\u963b\u6297\u8ba1\u7b97\u516c\u5f0f\u4f8b\u9898
\u5f53\u6d89\u53ca\u5230\u963b\u6297\u8ba1\u7b97\u65f6\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u4f8b\u9898\uff1a
1. \u8ba1\u7b97\u7535\u963b\u7684\u963b\u6297\uff1a
\u5047\u8bbe\u6709\u4e00\u4e2a\u7535\u963b R = 10 \u03a9\uff0c\u8981\u8ba1\u7b97\u5728\u9891\u7387\u4e3a 50 Hz \u7684\u4ea4\u6d41\u7535\u6e90\u4e0b\u7684\u963b\u6297\u3002
\u89e3\u7b54\uff1a\u7531\u4e8e\u7535\u963b\u662f\u4e00\u4e2a\u7eaf\u963b\u6027\u5143\u4ef6\uff0c\u5176\u963b\u6297\u4e0e\u9891\u7387\u65e0\u5173\uff0c\u53ef\u4ee5\u76f4\u63a5\u5c06\u7535\u963b\u503c\u4f5c\u4e3a\u963b\u6297\u503c\uff0c\u5373 Z = 10 \u03a9\u3002
2. \u8ba1\u7b97\u7535\u611f\u7684\u963b\u6297\uff1a
\u5047\u8bbe\u6709\u4e00\u4e2a\u7535\u611f L = 5 mH\uff0c\u8981\u8ba1\u7b97\u5728\u9891\u7387\u4e3a 1 kHz \u7684\u4ea4\u6d41\u7535\u6e90\u4e0b\u7684\u963b\u6297\u3002
\u89e3\u7b54\uff1a\u7535\u611f\u7684\u963b\u6297\u516c\u5f0f\u4e3a Z = j\u03c9L\uff0c\u5176\u4e2d j \u662f\u865a\u6570\u5355\u4f4d\uff0c\u03c9 \u662f\u89d2\u9891\u7387\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u9891\u7387\u4e3a 1 kHz\uff0c\u5bf9\u5e94\u7684\u89d2\u9891\u7387\u4e3a \u03c9 = 2\u03c0f = 2\u03c0(1000) = 2000\u03c0 rad/s\u3002\u56e0\u6b64\uff0c\u7535\u611f\u7684\u963b\u6297\u4e3a Z = j(2000\u03c0)(5\u00d710^(-3)) = j10\u03c0 \u03a9\u3002
3. \u8ba1\u7b97\u7535\u5bb9\u7684\u963b\u6297\uff1a
\u5047\u8bbe\u6709\u4e00\u4e2a\u7535\u5bb9 C = 20 \u03bcF\uff0c\u8981\u8ba1\u7b97\u5728\u9891\u7387\u4e3a 100 Hz \u7684\u4ea4\u6d41\u7535\u6e90\u4e0b\u7684\u963b\u6297\u3002
\u89e3\u7b54\uff1a\u7535\u5bb9\u7684\u963b\u6297\u516c\u5f0f\u4e3a Z = 1 / (j\u03c9C)\uff0c\u5176\u4e2d j \u662f\u865a\u6570\u5355\u4f4d\uff0c\u03c9 \u662f\u89d2\u9891\u7387\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u9891\u7387\u4e3a 100 Hz\uff0c\u5bf9\u5e94\u7684\u89d2\u9891\u7387\u4e3a \u03c9 = 2\u03c0f = 2\u03c0(100) = 200\u03c0 rad/s\u3002\u56e0\u6b64\uff0c\u7535\u5bb9\u7684\u963b\u6297\u4e3a Z = 1 / (j(200\u03c0)(20\u00d710^(-6))) = 1 / (j0.004\u03c0) \u03a9\u3002
\u8fd9\u4e9b\u4f8b\u9898\u5c55\u793a\u4e86\u8ba1\u7b97\u7535\u963b\u3001\u7535\u611f\u548c\u7535\u5bb9\u7684\u963b\u6297\u7684\u65b9\u6cd5\u3002\u8bf7\u6ce8\u610f\uff0c\u5728\u5b9e\u9645\u95ee\u9898\u4e2d\uff0c\u53ef\u80fd\u8fd8\u6d89\u53ca\u5230\u5e76\u8054\u3001\u4e32\u8054\u8fde\u63a5\u7684\u5143\u4ef6\u3001\u590d\u6742\u7535\u8def\u62d3\u6251\u7b49\u60c5\u51b5\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\u91c7\u7528\u76f8\u5e94\u7684\u8ba1\u7b97\u65b9\u6cd5\u3002
1\u3001\u963b\u6297\u5f80\u5f80\u7528\u590d\u6570\u5f62\u5f0f\u6765\u8868\u793a\uff0cZ=R+jX\uff08\u5355\u4f4d\u4e3a\u03a9\uff09\u3002
2\u3001\u5176\u4e2d\uff0c\u5b9e\u6570\u90e8\u5206R\u5c31\u662f\u7535\u963b\uff08\u5355\u4f4d\u4e3a\u03a9\uff09\u3002
3\u3001\u865a\u6570\u90e8\u5206\u662f\u7531\u5bb9\u6297\u3001\u611f\u6297\u7ec4\u6210\uff0c\uff08\u7535\u5bb9C\uff0c\u5355\u4f4d\u4e3aF\u3002\u5bb9\u6297XC\uff0c\u5355\u4f4d\u4e3a\u03a9\u3002\uff09\uff08\u7535\u611fL\uff0c\u5355\u4f4d\u4e3aH\u3002\u611f\u6297XL\uff0c\u5355\u4f4d\u4e3a\u03a9\u3002\uff09\u3002
4\u3001\u7531\u4e8e\u5bb9\u6297\u4e0e\u611f\u6297\u5728\u5411\u91cf\u4e0a\u662f\u76f8\u53cd\u7684\u4e24\u4e2a\u91cf\uff08\u7535\u89d2\u5ea6\u76f8\u5dee180\u5ea6\uff09\uff0c\u6240\u4ee5\u6211\u4eec\u6709X=\uff08XL-XC\uff09\u3002
5\u3001\u5bb9\u6297XC=1/\u03c9C\uff0c\u611f\u6297XL=\u03c9L\uff0c\u5176\u4e2d\uff1a\u89d2\u9891\u7387\u03c9=2*\u03c0*f\uff0cf\u4e3a\u9891\u7387\u3002\u6240\u4ee5\uff0c\u611f\u6297\u6216\u5bb9\u6297\u503c\u7684\u5927\u5c0f\u4e0d\u4ec5\u4e0e\u7535\u611f\u6216\u7535\u5bb9\u672c\u8eab\u7684\u5927\u5c0f\u6709\u5173\uff0c\u8fd8\u4e0e\u4ed6\u4eec\u6240\u5728\u56de\u8def\u4e2d\u7684\u5de5\u4f5c\u9891\u7387\u6709\u5173\uff0c\u4f8b\u5982\u6211\u56fd\u7535\u7f51\u7684\u5de5\u4f5c\u9891\u7387\u4e3a50\u5468\u6ce2\uff0c\u800c\u7f8e\u56fd\u662f60\u5468\u6ce2\uff0c\u6240\u4ee5\u5c3d\u7ba1\u7535\u963b\u3001\u7535\u611f\u3001\u7535\u5bb9\u7684\u503c\u662f\u4e00\u6837\uff0c\u4f46\u8ba1\u7b97\u51fa\u6765\u7684\u611f\u6297\u3001\u5bb9\u6297\u3001\u963b\u6297\u662f\u4e0d\u4e00\u6837\u7684\u3002
6\u3001\u6240\u4ee5\u6211\u4eec\u5f97\u5230\u7684\u590d\u6570\u963b\u6297\u6709\uff1aZ=R+j\uff08XL-XC\uff09\uff0c\u800c\u4ed6\u7684\u6a21\uff08\u6807\u91cf\uff09\uff5cZ\uff5c=\uff08R^2+X^2\uff09^0.5\u3002
复数阻抗表达式：Z=R+j（ω*L-（1/ω*C）），（在这里没有电容C）
电感（Ω）Zx=ω*L=2*π*f*L
阻抗（幅值Ω）Z（绝对值）=（Zx^2+R^2）^0.5：
阻抗角φ=arctan（Zx/R）
其中：R为电阻分量（Ω）；Zx为电感分量（Ω）；L为电感量（H）;
f为工作频率（Hz）在我国按50计。
下面，你自己可以计算了。
阻抗要根据频率计算。 阻抗(ohm) = 2 * 3.14159 * F(工作频率) * 电感量(mH)＋电阻。
求围观 同问
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绛旓細璇存槑锛氳礋杞芥槸鐢甸樆銆佺數鎰熺殑鎰熸姉銆佺數瀹圭殑瀹规姉涓夌绫诲瀷鐨勫鐗╋紝澶嶅悎鍚庣粺绉扳滈樆鎶椻濓紝鍐欐垚鏁板鍏紡鍗虫槸锛氶樆鎶梈= R+i(蠅L鈥1/锛埾塁锛)銆傚叾涓璕涓虹數闃伙紝蠅L涓烘劅鎶楋紝1/锛埾塁锛変负瀹规姉銆傦紙1锛夊鏋(蠅L鈥1/蠅C) > 0锛岀О涓衡滄劅鎬ц礋杞解濓紱锛2锛夊弽涔嬶紝濡傛灉(蠅L鈥1/蠅C) < 0绉颁负鈥滃鎬ц礋杞解濄
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绛旓細鐢甸樆璁＄畻鍏紡 锛1锛塕=蟻L/S锛堝叾涓紝蟻琛ㄧず鐢甸樆鍥炵殑鐢甸樆鐜囷紝鏄敱鍏舵湰韬ц川鍐冲畾绛旓紝L琛ㄧず鐢甸樆鐨勯暱搴︼紝S琛ㄧず鐢甸樆鐨勬í鎴潰绉級锛2锛夊畾涔夊紡锛歊=U/I 锛3锛変覆鑱旂數璺腑鐨勬荤數闃伙細R=R1+R2+R3+鈥︹+Rn 锛4锛夊苟鑱旂數璺腑鐨勬荤數闃伙細1/R=1/R1+1/R2+鈥︹+1/Rn 锛5锛夐氳繃鐢靛姛鐜囨眰鐢甸樆锛歊=U&#...
