【判断题】【消耗次数：1】
振荡电路的平衡条件是AF=1，负反馈才能满足振荡电路的相位平衡条件。
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正确
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错误
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在正弦振荡电路中，能产生等幅振荡的幅度条件是（）。
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AF1
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<imgwidth="48"height="18"v:shapes="_x0000_i2164"src="http://wljy.whut.edu.cn:80/uploadfiles/word/mndzjs.files/image002.png">
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因为RC串并联选频网络作为反馈网络时的＝0°，单管共集放大电路的＝0°，满足正弦波振荡的相位条件＋＝2nπ（n为整数），故合理连接它们可以构成正弦波振荡电路。（）
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