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The oscillator circuit diagram composed of crystal inverter

2016-08-31 10:48  
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The oscillator circuit diagram composed of crystal inverter
In the circuit, crystal X ( 3.2MHz ) forms the oscillator circuit, after its oscillation output is connected to BCD counter CD4518, it will divide the original oscillation frequency, then the CD4518's different output ends can get the signals with different frequencies, If the terminal A outputs the l20kHz frequency signal, the terminal B outputs 24kHz frequency signal, the terminal C outputs 12kHz frequency signal.