Pulse delay generating circuit composed of the SN7490

Published:2011/5/19 20:19:00 Author:Christina | Keyword: Pulse delay generating | From:SeekIC

The pulse delay generating circuit composed of the SN7490 is as shown. It uses the 220V、50Hz AC as the standard delay pulse generating circuit. In the circuit, port A can output 0.1s delay pulse, port B can output 1s delay pulse, port C can output 10s delay pulse. This circuit is the standard pulse circuit and also the basic form circuit of the digital counter.



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