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\n\t\"\"<\/div>\n

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\n\tJFET\u7684\u4f0f\u5b89\u7279\u6027(\u4ee5N\u6c9f\u9053JFET\u4e3a\u4f8b)\uff1a\u4f0f\u5b89\u7279\u6027\u66f2\u7ebf\u548c\u7535\u6d41\u65b9\u7a0b\u4e0e\u8017\u5c3d\u578bMOSFET\u76f8\u4f3c\u3002\u4f46VGS<\/font>\u5fc5\u5b9a\u8981\u53cd\u5411\u504f\u7f6e\u3002<\/p>\n

\n\t\"\"<\/div>\n

\n\t\u4e09\u3001\u573a\u6548\u5e94\u7ba1\u7684\u4e3b\u8981\u53c2\u6570<\/b><\/p>\n

\n\t1.\u76f4\u6d41\u53c2\u6570<\/p>\n

\n\t\u5f00\u542f\u7535\u538bVT<\/font>\uff1a \u589e\u5f3a\u578b\u7ba1\u7684\u53c2\u6570\uff1b\u5939\u65ad\u7535\u538bVP<\/font>\uff1a\u8017\u5c3d\u578b\u7ba1\u7684\u53c2\u6570\uff1b\u9971\u548c\u6f0f\u6781\u7535\u6d41IDSS<\/font>\uff1a \u6307\u8017\u5c3d\u578b\u7ba1\u5728VGS<\/font>=0\u65f6\u7684\u6f0f\u6781\u7535\u6d41\uff1b\u8f93\u5165\u7535\u963b RGS(DC)<\/font>\uff1a\u56e0iG<\/font>=0\uff0c\u6240\u4ee5\u8f93\u5165\u7535\u963b\u5f88\u5927\u3002JFET\u5927\u4e8e107Ω\uff0cMOS\u7ba1\u5927\u4e8e1012Ω\u3002<\/p>\n

\n\t2.\u4ea4\u6d41\u53c2\u6570<\/p>\n

\n\t\u4f4e\u9891\u8de8\u5bfc(\u4e92\u5bfc)gm<\/font>\uff1a\"\"\uff0c\u8de8\u5bfcgm<\/font>\u53cd\u6620\u4e86\u6805\u6e90\u7535\u538b\u5bf9\u6f0f\u6781\u7535\u6d41\u7684\u63a7\u5236\u80fd\u529b\uff0c\u4e14\u4e0e\u5de5\u4f5c\u70b9\u6709\u5173\uff0c\u662f\u8f6c\u79fb\u7279\u6027\u66f2\u7ebf\u4e0a\u8fc7Q\u70b9\u5207\u7ebf\u7684\u659c\u7387\u3002gm<\/font>\u7684\u5355\u4f4d\u662fmS\uff1b\u4ea4\u6d41\u8f93\u51fa\u7535\u963brds<\/font>\uff1a\"\"\uff0crds<\/font>\u53cd\u6620\u4e86\u6f0f\u6e90\u7535\u538b\u5bf9\u6f0f\u6781\u7535\u6d41\u7684\u5f71\u54cd\u7a0b\u5ea6\uff0c\u5728\u6052\u6d41\u533a\u5185\uff0c\u662f\u8f93\u51fa\u7279\u6027\u66f2\u7ebf\u4e0a\u8fc7Q\u70b9\u7684\u5207\u7ebf\u659c\u7387\u7684\u5012\u6570\u3002\u5176\u503c\u4e00\u822c\u4e3a\u82e5\u51e0\u5341kΩ\u3002<\/p>\n

\n\t3.\u6781\u9650\u53c2\u6570<\/p>\n

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