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Timing Circuit Composed Of Quartz Electronic Clock IC

2017-01-08 03:02  
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Timing Circuit Composed Of Quartz Electronic Clock IC
The pulse signal, which provided from the quartz electronic clock IC, has high accuracy. So it is widely used not just in quartz electronic clock, but also in time-base circuit and timing circuit. The picture shows the second pulse signal generator principle circuit composed of quartz electronic clock IC. The IC's working voltage is provided from positive voltage drop of two rectifier diodes (2CP). The power could be selected during 1.5V~15V. And also two detector diodes (2CP) and a triode (3CG) make up the NAND gate logic circuit. When the circuit is working, the output port (triode's collector polar) could get sable and accurate second signal. The circuit is connected a external 32.768kHz quartz crystal and a 5~20pF variable capacitor for frequency micro-adjustment. The quartz electronic clock IC can use the low-frequency type clock circuit, such as H5544 or LH5093 and so on.