Digital sound and light control stairs delay switch circuit ( 5 )

Published:2012/8/29 1:32:00 Author:Ecco | Keyword: Digital , sound and light control, stairs, delay switch | From:SeekIC

As shown in the figure, it is a sound and light control stairs delay switch circuit using CD4069 integrated circuit, and it uses the piezoelectric ceramicslice as the sound-electric transducer, the circuitis stable and reliable with good performance. The circuit delay time is set shorter with only15s around, and it is primarily decided by discharge time of R4 and C2. It can generally meet the using needs.



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