简单信号放大电路。要求利用一般运算放大器搭建比例运算放大电路。能对低频正弦信号（100mv左右）进 运算放大器的 基本知识
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2\u3001\u6700\u5927\u8f93\u51fa\u7535\u538b Uop-p
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\u9608\u503c\u7535\u538b\uff1a\u6211\u4eec\u5c06\u6bd4\u8f83\u5668\u7684\u8f93\u51fa\u7535\u538b\u4ece\u4e00\u4e2a\u7535\u5e73\u8df3\u53d8\u5230\u53e6\u4e00\u4e2a\u7535\u5e73\u65f6\u5bf9\u5e94\u7684\u8f93\u5165\u7535\u538b\u7684\u503c\u3002\u5b83\u8fd8\u88ab\u79f0\u4e3a\u95e8\u9650\u7535\u538b\u3002\u7b80\u79f0\u4e3a\uff1a\u9608\u503c\u3002\u7528\u7b26\u53f7UTH\u8868\u793a\u3002
\u5229\u7528\u7b80\u5355\u7535\u538b\u6bd4\u8f83\u5668\u53ef\u5c06\u6b63\u5f26\u6ce2\u53d8\u4e3a\u540c\u9891\u7387\u7684\u65b9\u6ce2\u6216\u77e9\u5f62\u6ce2\u3002
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\u6211\u4eec\u524d\u9762\u5b66\u4e60\u7684\u6bd4\u8f83\u5668\u90fd\u662f\u7528\u96c6\u6210\u8fd0\u653e\u6784\u6210\u7684\uff0c\u5b83\u5b58\u5728\u7740\u4e00\u5b9a\u7684\u7f3a\u70b9\u3002\u6211\u4eec\u4e00\u822c\u7528\u96c6\u6210\u7535\u538b\u6bd4\u8f83\u5668\u6765\u4ee3\u66ff\u5b83\u3002\u96c6\u6210\u7535\u538b\u6bd4\u8f83\u5668\u7684\u56fa\u6709\u7279\u70b9\u662f\uff1a
\u53ef\u76f4\u63a5\u9a71\u52a8TTL\u7b49\u6570\u5b57\u96c6\u6210\u7535\u8def\u5668\u4ef6\uff1b
\u5b83\u7684\u54cd\u5e94\u901f\u5ea6\u6bd4\u540c\u7b49\u4ef7\u683c\u96c6\u6210\u8fd0\u653e\u6784\u6210\u6bd4\u8f83\u5668\u5feb\uff1b
\u4e3a\u63d0\u9ad8\u901f\u5ea6\uff0c\u96c6\u6210\u7535\u538b\u6bd4\u8f83\u5668\u5185\u90e8\u7535\u8def\u7684\u8f93\u5165\u7ea7\u5de5\u4f5c\u7535\u6d41\u8f83\u5927\u3002
就用同相放大电路最简单。它不仅电路形式最简单，而且输入阻抗极高，因此对信号源的输出阻抗没有高的要求。
典型实用电路如下图（如果需要10倍的电压增益，图中比例电阻R1和R2的阻值之比设置为1:9即可，例如10kΩ和90kΩ）——
那就采用反相比例放大器好了，最简单了！
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