您好:我用CD74HC297芯片做了一个频率跟踪电路,但是做的电路不能实现频率跟踪,而且输出是固定的频率,电路图在附件里,请指导,谢谢
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您好:我用CD74HC297芯片做了一个频率跟踪电路,但是做的电路不能实现频率跟踪,而且输出是固定的频率,电路图在附件里,请指导,谢谢
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