The 4-time frequency circuit composed of CH7555

Published:2011/6/17 7:35:00 Author:Borg | Keyword: frequency circuit | From:SeekIC

In the figure is the 4-time frequency circuit. This circuit consists of 3 CH7555 timers. When the symmetric wave is input, it is turned into the twice frequency by the phase inverter and the transistor. The two signals trigger the CH7555 single circuit at the same time, so that there generates two teams of pulses with different band widths on the output terminals of IC1 and IC2, then their dropping edges are to trigger the single stable circuit consisting of IC3, finally, a four-time frequency is generated on the output terminal of IC3.



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