Sound Control Twinkling Illuminations (2)

Published:2011/7/8 7:47:00 Author:Sue | Keyword: Sound Control, Twinkling, Illuminations | From:SeekIC

The 220v ac voltage will provide the sound control circuit and IC with +12v working voltage after it is rectificated by VD1-VM, limited and reduced by R4,R5, stablized by VS, filtrated by C4. After IC begins to work, its pin 1, pin 2, pin 6, pin 7 will output 4 circuits of control signals which will make VT1-VW connected in turn. Then illuminations HL1-HL4 will be drived to be illuminated and generate a running flowing illumination effect. BM will turn the musical signals it receives into electric signals, which will be put on IC's pin5 through C2 after it is amplified by V, volume adjusted by RP1. The signals can adjust the oscillate frequency of IC's inner voltage control oscillator which will make the illumination effects change with the musical signal's rhythm synchronically.



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