【判断题】【消耗次数：1】
文氏电桥正弦波振荡器产生振荡时，该选频网络的反馈系数为1/3。
①
正确
②
错误
参考答案：
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【判断题】
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。（）
①
正确
②
错误
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