Musical Lantern Controller(NE555,CD4066,CD4017)

Published:2011/8/18 5:50:00 Author: | Keyword: Musical Lantern, Controller | From:SeekIC

The picture shows the musical lantern control circuit. The controller consists of acoustic electric transduce and amplifying circuit, clock pulse generator, counting circuit and control circuit. The pickup transmitter MIC willconvert the acoustic signal to electric signal which will be put onto four circuits of analog switch CD4066(IC3) after it is amplified by BG1-BG3. The clock pulse generator consists of IC1(555), W1,R1,R2,D1 and C1. The circuit's signalperiod T=0.693(Rw1+R1+R2)C1, and the correspondence period T in the picture varies in the range of 0.5-5s, among which 555(pin 3) is output and put on IC2 to work as CP pulse.



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