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轻触开关厂家浅析开关的测压法


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轻触开关厂家介绍,如果一个三极管的BE结电压大于0.7V,可能就是BE结就开路信号注入法。轻触开关将信号源加至输入端,然后依次往后测量各点的波形,看是否正常,以找到故障点。有时我们也会用更简单的办法,例如用手握一个镊子,去碰触各级的输入端,看输出端是否有反应,这在音频、视频等放大电路中常使用。

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