Long Time Delay Sound Control Light Switch Circuit Composed of CD4011

Published:2011/7/23 7:09:00 Author:Sue | Keyword: Long Time Delay, Sound Control, Light Switch | From:SeekIC

The long time delay sound control light switch shown in the picture has the longest delay time of 1h. It is suitable for primary and secondary school students tohave time control when they are doing the homework. Then students will have arest after they have studied for an hour. This can improve their learning efficiency. The picture shows the circuit, which consists of acoustic sensor, monostable delay circuit, relay, drive circuit and power circuit.



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