Touch Diphonia Doorbell Circuit

Published:2011/7/8 8:37:00 Author:Joyce | Keyword: Touch, Diphonia , Doorbell | From:SeekIC

As shown in the figure, the touch daphnia doorbell does not have a button, but has a pair of touch slices as the starting switch. When one’s hand touches the slice, a certain amount of high level gained by the slice from the power source through the human resistance will start the circuit, which is as shown in the figure. The circuit is composed by a CD4069 of six inverters. Two of the gates constitute start-and-stop circuit, two gates form an audio oscillator, and the rest two doors compose a rhythm oscillator of the audio oscillator



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