4 hours AC power timer circuit 555 BH4024

Posted on Mar 28, 2007

As shown in Figure 4 hours AC timing circuit. In this circuit, BH4024 is 7 serial binary counter/divider 555 time base circuit. AN is timed touch of a button. Each press AN tim

4 hours AC power timer circuit 555 BH4024
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e, output AC 220V power supply for 4 hours and that is de-energized. The circuit can be used on the afternoon of the power supply unit of work time by four hours manner.

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