在射极偏置放大电路re模型（国内叫H参数模型）中考虑内阻Rce即Ro，Zb是怎么算出来的？ 三极管放大电路 各极电阻的确定 （实例）
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\uff32b=\uff36CC/\uff29B=300K\u03a9 \uff32c=(\uff36CC-\uff36CE)/\uff29C=3K\u03a9
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\uff36CE=-(\uff36CC-\uff29C.\uff32C)=-4V
(2)\u6b65\u9aa4\uff1a\u5148\u5206\u522b\u4ece\u4e09\u6781\u7ba1\u7684\u4e09\u4e2a\u6781\uff08b\u3001e\u3001c\uff09\u51fa\u53d1\uff0c\u6839\u636e\u7535\u5bb9\u548c\u7535\u6e90\u4ea4\u6d41\u77ed\u63a5\uff0c\u753b\u51fa\u653e\u5927\u7535\u8def\u7684\u4ea4\u6d41\u901a\u8def\uff1b\u518d\u5c06\u4e09\u6781\u7ba1\u7528\u5c0f\u4fe1\u53f7\u6a21\u578b\u66ff\u4ee3\uff1b\u5e76\u5c06\u7535\u8def\u4e2d\u7535\u91cf\u7528\u77ac\u65f6\u503c\u6216\u76f8\u91cf\u7b26\u53f7\u8868\u793a\uff0c\u5373\u5f97\u5230\u653e\u5927\u7535\u8def\u7684\u5c0f\u4fe1\u53f7\u7b49\u6548\u7535\u8def\u3002\u6ce8\u610f\u53d7\u63a7\u7535\u6d41\u6e90\u7684\u65b9\u5411\u3002\uff08\u56fe\u7565\uff09
(3)\uff52be=200+(1+\u03b2)26mA/\uff29EQ =857\u03a9
\uff21V=-\u03b2(\uff32C//\uff32L)/\uff52be=-155.6
(4)\u56e0\u4e3a\uff56EB=-\uff56i+\uff36Cb1=-\uff56i+\uff36EB
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\u89e3\uff1a\u672c\u653e\u5927\u7535\u8def\u4e3a\u4e00\u4e24\u7ea7\u76f4\u63a5\u8026\u5408\u653e\u5927\u7535\u8def\uff0c\u4e24\u6781\u90fd\u662f\u5171\u96c6\u7535\u6781\u7ec4\u6001\u3002\u8ba1\u7b97\u5176\u6027\u80fd\u6307\u6807\u65f6\uff0c\u5e94\u6ce8\u610f\u7ea7\u95f4\u7684\u76f8\u4e92\u5f71\u54cd\u3002\uff081\uff09\u6c42\u7535\u538b\u653e\u5927\u500d\u6570 \uff21V=\uff36O/\uff36i\u753b\u51fa\u653e\u5927\u7535\u8def\u7684\u5c0f\u4fe1\u53f7\u7b49\u6548\u7535\u8def\u3002\uff21V1=\uff36O1/\uff36i=\uff081+\u03b2\uff09\uff08Re1//RL1\uff09/[\uff52be+\uff081+\u03b2\uff09\uff08Re1//RL1\uff09]\uff21V2=\uff36O/\uff36O1=\uff081+\u03b2\uff09\uff08Re2//RL\uff09/[\uff52be+\uff081+\u03b2\uff09\uff08Re2//RL\uff09]\uff21V=\uff36O/\uff36i=\uff21V1*\uff21V2\u5176\u4e2d\uff1aRL1\u4e3a\u7b2c\u4e00\u7ea7\u653e\u5927\u7535\u8def\u7684\u8d1f\u8f7d\u7535\u963b\uff0cRL1=\uff52be+\uff081+\u03b2\uff09\uff08Re2//RL\uff09\uff082\uff09\u8f93\u5165\u7535\u963bRiRi=\uff36i/Ii=Rb1//[\uff52be+\uff081+\u03b2\uff09\uff08Re1//RL1\uff09\uff083\uff09\u8f93\u51fa\u7535\u963bRoRo=Re2//[\uff08\uff52be+Ro1\uff09/\uff081+\u03b2\uff09]\u5176\u4e2d\uff1aRo1\u4e3a\u7b2c\u4e00\u7ea7\u653e\u5927\u7535\u8def\u7684\u8f93\u51fa\u7535\u963b\uff0cRo1=Re1//[\uff08\uff52be+\uff08Rb1//Rs\uff09\uff09/\uff081+\u03b2\uff09]\u96be\u70b9\u91cd\u70b91\uff0e\u534a\u5bfc\u4f53\u4e09\u6781\u7ba1\u5185\u90e8\u8f7d\u6d41\u5b50\u7684\u4f20\u8f93\u8fc7\u7a0b
\uff081\uff09\u53d1\u5c04\u533a\u5411\u57fa\u533a\u6ce8\u5165\u7535\u5b50\u3000\u3000\u7531\u4e8e\u53d1\u5c04\u7ed3\u5916\u52a0\u6b63\u5411\u7535\u538b\uff0c\u53d1\u5c04\u7ed3\u7684\u5185\u7535\u573a\u88ab\u524a\u5f31\uff0c\u6709\u5229\u4e8e\u8be5\u7ed3\u4e24\u8fb9\u534a\u5bfc\u4f53\u4e2d\u591a\u5b50\u7684\u6269\u6563\u3002\u6d41\u8fc7\u53d1\u5c04\u6781\u7684\u7535\u6d41\u7531\u4e24\u90e8\u5206\u7ec4\u6210\uff1a\u4e00\u662f\u53d1\u5c04\u533a\u4e2d\u7684\u591a\u5b50\u81ea\u7531\u7535\u5b50\u901a\u8fc7\u53d1\u5c04\u7ed3\u6ce8\u5165\u5230\u57fa\u533a\uff0c\u6210\u4e3a\u96c6\u533a\u4e2d\u7684\u975e\u5e73\u8861\u5c11\u5b50\u800c\u5f62\u6210\u7684\u7535\u5b50\u7535\u6d41\uff29EN\uff0c\u4e8c\u662f\u57fa\u533a\u4e2d\u7684\u591a\u5b50\u7a7a\u7a74\u901a\u8fc7\u53d1\u5c04\u7ed3\u6ce8\u5165\u5230\u53d1\u5c04\u533a\uff0c\u6210\u4e3a\u53d1\u5c04\u533a\u7684\u975e\u5e73\u8861\u5c11\u5b50\u800c\u5f62\u6210\u7684\u7a7a\u7a74\u7535\u6d41\uff29EP\u3002\u7531\u4e8e\u57fa\u533a\u4e2d\u7a7a\u7a74\u7684\u6d53\u5ea6\u8fdc\u4f4e\u4e8e\u53d1\u5c04\u533a\u4e2d\u7535\u5b50\u7684\u6d53\u5ea6\uff0c\u56e0\u6b64\uff0c\u4e0e\u7535\u5b50\u7535\u6d41\u76f8\u6bd4\uff0c\u7a7a\u7a74\u7684\u7535\u6d41\u662f\u5f88\u5c0f\u7684\uff0c\u5373
\u3000\u3000\u3000\u3000\u3000\u3000\u3000\u3000\uff29E=\uff29EN+\uff29EP\uff08\u800c\uff29EN>>\uff29EP\uff09\uff082\uff09\u975e\u5e73\u8861\u8f7d\u6d41\u5b50\u5728\u57fa\u533a\u5185\u7684\u6269\u6563\u4e0e\u590d\u5408\u3000\u3000\u7531\u53d1\u5c04\u533a\u6ce8\u5165\u57fa\u533a\u7684\u7535\u5b50\uff0c\u4f7f\u57fa\u533a\u5185\u5c11\u5b50\u7684\u6d53\u5ea6\u53d1\u751f\u4e86\u53d8\u5316\uff0c\u5373\u9760\u8fd1\u53d1\u5c04\u7ed3\u7684\u533a\u57df\u5185\u5c11\u5b50\u6d53\u5ea6\u6700\u9ad8\uff0c\u4ee5\u540e\u9010\u6e10\u964d\u4f4e\uff0c\u56e0\u800c\u5f62\u6210\u4e86\u4e00\u5b9a\u7684\u6d53\u5ea6\u68af\u5ea6\u3002\u4e8e\u662f\uff0c\u7531\u53d1\u5c04\u533a\u6765\u7684\u7535\u5b50\u5c06\u5728\u57fa\u533a\u5185\u6e90\u6e90\u4e0d\u65ad\u5730\u5411\u96c6\u7535\u7ed3\u6269\u6563\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u7531\u4e8e\u57fa\u533a\u5f88\u8584\uff0c\u4e14\u63ba\u6742\u6d53\u5ea6\u5f88\u4f4e\uff0c\u56e0\u800c\u5728\u6269\u6563\u8fc7\u7a0b\u4e2d\uff0c\u53ea\u6709\u5f88\u5c11\u7684\u4e00\u90e8\u5206\u4f1a\u4e0e\u57fa\u533a\u4e2d\u7684\u591a\u5b50\uff08\u7a7a\u7a74\uff09\u76f8\u590d\u5408\uff0c\u5927\u90e8\u5206\u5c06\u5230\u8fbe\u96c6\u7535\u7ed3\u3002\uff083\uff09\u96c6\u7535\u533a\u6536\u96c6\u8f7d\u6d41\u5b50\u3000\u3000\u7531\u4e8e\u96c6\u7535\u7ed3\u5916\u52a0\u53cd\u5411\u7535\u538b\uff0c\u96c6\u7535\u7ed3\u7684\u5185\u7535\u573a\u88ab\u52a0\u5f3a\uff0c\u6709\u5229\u4e8e\u8be5\u7ed3\u4e24\u8fb9\u5c11\u5b50\u7684\u6f02\u79fb\u3002\u6d41\u8fc7\u96c6\u7535\u6781\u7684\u7535\u6d41\uff29C\uff0c\u9664\u4e86\u5305\u62ec\u7531\u57fa\u533a\u4e2d\u7684\u70ed\u5e73\u8861\u5c11\u5b50\u7535\u5b50\u901a\u8fc7\u96c6\u7535\u7ed3\u5f62\u6210\u7684\u7535\u5b50\u7535\u6d41\uff29CN2\u548c\u96c6\u7535\u533a\u4e2d\u7684\u70ed\u5e73\u8861\u5c11\u5b50\u7a7a\u7a74\u901a\u8fc7\u96c6\u7535\u7ed3\u5f62\u6210\u7684\u7a7a\u7a74\u7535\u6d41\uff29CP\u6240\u7ec4\u6210\u7684\u53cd\u5411\u9971\u548c\u7535\u6d41\uff29CBO\u4ee5\u5916\uff0c\u8fd8\u5305\u62ec\u7531\u53d1\u5c04\u533a\u6ce8\u5165\u5230\u57fa\u533a\u7684\u975e\u5e73\u8861\u5c11\u5b50\u81ea\u7531\u7535\u5b50\u5728\u57fa\u533a\u901a\u8fc7\u8fb9\u6269\u6563\u3001\u8fb9\u590d\u5408\u5230\u8fbe\u96c6\u7535\u7ed3\u8fb9\u754c\uff0c\u800c\u540e\u7531\u96c6\u7535\u7ed3\u8017\u5c3d\u5c42\u5185\u7684\u7535\u573a\u5c06\u5b83\u4eec\u6f02\u79fb\u5230\u96c6\u7535\u533a\u6240\u5f62\u6210\u7684\u6b63\u5411\u7535\u5b50\u4f20\u8f93\u7535\u6d41\uff29CN1\uff0c\u56e0\u6b64\u3000\u3000\u3000\u3000\uff29C=\uff29CN1+\uff29CN2+\uff29CP=\uff29CN1+\uff29CBO
\u5f0f\u4e2d\uff29CBO\uff1d\uff29CN2+\uff29CP\u3000\u3000\u57fa\u6781\u7535\u6d41\u7531\u4ee5\u4e0b\u51e0\u90e8\u5206\u7ec4\u6210\uff1a\u901a\u8fc7\u53d1\u5c04\u7ed3\u7684\u7a7a\u7a74\u7535\u6d41\uff29EP\uff0c\u901a\u8fc7\u96c6\u7535\u7ed3\u7684\u53cd\u5411\u9971\u548c\u7535\u6d41\uff29CBO\u4ee5\u53ca\uff29EN\u8f6c\u5316\u4e3a\uff29CN1\u8fc7\u7a0b\u4e2d\u5728\u57fa\u533a\u7684\u590d\u5408\u7535\u6d41\uff08\uff29EN-\uff29CN1\uff09\uff0c\u5373\u3000\u3000\u3000\u3000\uff29B=\uff29EP+\uff08\uff29EN-\uff29CN1\uff09-\uff29CBO
\u6839\u636e\u8bbe\u8ba1\u9700\u6c42\uff0c\u4e3b\u8981\u662f\u653e\u5927\u500d\u6570\u548c\u4e09\u6781\u7ba1\u5de5\u4f5c\u7535\u6d41\uff08\u5c31\u662f\u5c04\u6781\u7535\u6d41Ie\u6216\u8005\u96c6\u7535\u6781\u7535\u6d41Ic\uff09\u3002
\u4e09\u6781\u7ba1\u5de5\u4f5c\u7535\u6d41\u5f71\u54cd\u4e09\u6781\u7ba1\u7ebf\u6027\u6027\u548c\u529f\u8017\uff0c\u7535\u6d41\u8d8a\u5927\u7ebf\u6027\u5ea6\u8d8a\u597d\uff0c\u529f\u8017\u4e5f\u8d8a\u5927\u3002\u6ca1\u7279\u522b\u9700\u6c42\u7684\u65f6\u5019\u53ef\u4ee5\u53d61mA\uff0c\u4f4e\u529f\u801710-100uA\uff0c\u9ad8\u6027\u80fd\u53d65mA-10mA\u90fd\u884c\uff0c\u6839\u636e\u9700\u6c42\u548c\u5177\u4f53\u4e09\u6781\u7ba1\u578b\u53f7\u5b9a\u3002
\u653e\u5927\u500d\u6570\u5f88\u5927\u7684\u65f6\u5019\u4e0d\u63a5\u5c04\u6781\u4ea4\u6d41\u53cd\u9988\u7535\u963b\uff0c\u5426\u5219\u4e00\u822c\u90fd\u8981\u63a5\u7684\uff0c\u63a5\u4e86\u4e4b\u540e\u653e\u5927\u500d\u6570\u7a33\u5b9a\u3002\u5373\u4f7f\u4e0d\u63a5\u4ea4\u6d41\u53cd\u9988\u7535\u963b\uff0c\u4e5f\u4e00\u822c\u4f1a\u50cf\u4f60\u7684\u56fe\u91cc\u90a3\u6837\u63a5\u4e00\u4e2a\u76f4\u6d41\u53cd\u9988\u7535\u963b\uff0c\u4fdd\u8bc1\u5de5\u4f5c\u70b9\u7a33\u5b9a\u3002
\u63a5\u4e0b\u6765\u786e\u5b9aRc\u3002\u653e\u5927\u500d\u6570\u8981\u6c42\u5f88\u5927\u7684\u65f6\u5019\uff0c\u53ea\u80fd\u6309\u7167\u653e\u5927\u500d\u6570\u7684\u9700\u6c42\u6765\u8bbe\u5b9aRc\u4e86\uff0cRc*Ic/Vt = \u653e\u5927\u500d\u6570\u3002\u5426\u5219\u662f\u4e00\u822c\u662f\u8003\u8651\u5de5\u4f5c\u8303\u56f4\uff0c\u8ba9\u96c6\u7535\u6781\u7684\u9759\u6001\u5de5\u4f5c\u70b9\u5728Vb\u548c\u7535\u6e90\u7535\u538b\u7684\u4e2d\u70b9\uff0c\u8fd9\u6837\u8f93\u51fa\u7684\u6b63\u5f26\u6ce2\u53ef\u4ee5\u6709\u6700\u5927\u4e0d\u5931\u771f\u7684\u5e45\u5ea6\u3002\u800cVb=Ie * Re + 0.7 = Ic * Re + 0.7, \u56e0\u6b64
Ic * Rc * 2 = Vcc - Ic * Re - 0.7,
(Rc * 2 + Re) * Ic = Vcc - 0.7
Re = (Vcc- 0.7) / Ic - 2 * Rc
Re\u4e0a\u6ca1\u6709\u5e76\u8054\u7535\u5bb9\u7684\u65f6\u5019\uff0cRc / Re = \u653e\u5927\u500d\u6570\uff0c\u6839\u636e\u8fd9\u4e24\u4e2a\u65b9\u7a0b\u53ef\u4ee5\u89e3\u51faRc\u548cRe\u7684\u503c\u3002
Re\u4e0a\u5e76\u8054\u7535\u5bb9\u7684\u65f6\u5019\uff0cRc\u7684\u503c\u6839\u636e\u653e\u5927\u500d\u6570\u8bbe\u5b9a\uff0c\u6216\u8005\u653e\u5927\u500d\u6570\u8981\u6c42\u4e0d\u4e25\u683c\u65f6\uff0c\u6839\u636eRc * Ic * 2 = Vcc - Vb\uff0cVb\u53d6\u4e00\u4e2a\u5927\u4e8e0.7\u7684\u5408\u9002\u7684\u6570\uff08\u6bd4\u59821V,2V\uff0c\u7535\u6e90\u7535\u538b\u9ad8\uff08\u6bd4\u598212V\uff09\u65f6\u53ef\u4ee5\u66f4\u9ad8\uff09\uff0c\u7136\u540e\u6839\u636eVb = 0.7 + Ic * Re\u6765\u8ba1\u7b97Re\u7684\u503c\u3002
\u6700\u540e\u662fRb1\u548cRb2\uff0c\u8fd9\u4e24\u4e2a\u7535\u963b\u5206\u538b\u6765\u63a7\u5236Vb\u7684\u503c\u3002\u6839\u636e\u524d\u9762\u8ba1\u7b97\u51fa\u7684Rc\u548cRe\u53ef\u4ee5\u7b97\u51faVb\u7684\u503c\uff0cRb1 / Rb2 = (Vcc - Vb) / Vb\u3002\u540c\u65f6\u56e0\u4e3aRb1//Rb2\u7ea6\u7b49\u4e8e\u653e\u5927\u7535\u8def\u7684\u8f93\u5165\u7535\u963b\uff0c\u4e00\u822c\u5e0c\u671b\u8f93\u5165\u7535\u963b\u5c3d\u53ef\u80fd\u5927\uff0c\u4f46Rb1\u548cRb2\u5982\u679c\u592a\u5927\uff0c\u4f1a\u56e0\u4e3aIb\uff08\u5de5\u4f5c\u65f6\u6ce2\u52a8\u7ea61uA\u91cf\u7ea7\uff09\u5f71\u54cd\u76f4\u6d41\u5de5\u4f5c\u70b9\u7a33\u5b9a\u6027\uff0c\u4e00\u822c\u5e0c\u671bIb * (Rb1 + Rb2) < 0.1\uff0c\u5373Rb1 + Rb2 < 100K\u3002\u56e0\u6b64\u4e00\u822c\u53d6\u5728\u51e0\u5341K\u7684\u91cf\u7ea7\u4e0a\u3002
\u5b9e\u9645\u8bbe\u8ba1\u7684\u65f6\u5019\u8fd8\u8981\u8003\u8651\u7535\u963b\u5e94\u8be5\u5bb9\u6613\u4e70\u5230\uff0c\u56e0\u6b64\u963b\u503c\u5e94\u5f53\u662f\u5e38\u89c1\u7684\u963b\u503c\u7cfb\u5217\uff0c\u5e38\u89c1\u7684\u6709\u54ea\u4e9b\u53ef\u4ee5\u67e5\u624b\u518c\u6216\u8005\u81ea\u884c\u767e\u5ea6\u3002\u4e00\u822c\u6839\u636e\u524d\u9762\u7684\u8ba1\u7b97\u5f97\u5230\u963b\u503c\uff0c\u7136\u540e\u53d6\u7cfb\u5217\u4e2d\u548c\u8fd9\u4e9b\u963b\u503c\u6700\u63a5\u8fd1\u7684\u5373\u53ef\uff0c\u53d6\u5b8c\u540e\u6700\u597d\u518d\u91cd\u65b0\u9a8c\u7b97\u4e00\u4e0b\u76f4\u6d41\u5de5\u4f5c\u70b9\u548c\u653e\u5927\u500d\u6570\u770b\u662f\u5426\u4ecd\u5728\u8bbe\u8ba1\u8303\u56f4\u5185\u3002
绛旓細鎻鍏灏勬瀬鏀惧ぇ鍣ㄧ殑濂ョ1. 鏋勯犱笌鍘熺悊: 鍏卞皠鏋佹斁澶у櫒鐢3涓櫠浣撶宸у缁勫悎锛岃緭鍏ヤ俊鍙烽氳繃鍩烘瀬锛岃緭鍑虹敱闆嗙數鏋佹帶鍒讹紝鍙戝皠鏋佸叡浜傝繖閲岋紝鎴戜滑璇﹀敖灞曠ず浜嗗熀鏈鍙峰拰閰嶇疆鍥撅紝璁╁垵瀛﹁呬竴鐩簡鐒躲2. 杩愯鏈哄埗: 鍒嗗帇鍣ㄥ亸缃槸鍏抽敭锛屽寘鎷熀鏋鍋忕疆鐢佃矾锛R1, R2, RE锛夛紝杈撳叆鐢靛C1锛屽彂灏勬瀬鏃佽矾鐢靛CE锛屼互鍙婅﹀悎...
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