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58问答库 > 下图中三极管Q1基极为何接两个电容，一个不行吗？三极管Q2构成的是什

下图中三极管Q1基极为何接两个电容，一个不行吗？三极管Q2构成的是什

2025-03-16 16:47:11

推荐回答（1个）

回答（1）：

Q1基极可以只接一个电容，C4可以不接。接C4是为了消除C3的分布电感，这个电路振荡频率不高，可以不接。Q2构成一个电压放大器。这个电路是个矩形波发生器，Q1及其周围电路组成拷比兹振荡器，振荡输出经Q2放大，再由NE555整形输出矩形波。
请看我的回答：https://zhidao.baidu.com/question/1887582600273830668

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