SH-818 seven functions color lamp and good quality piano music automatic control circuit

Published:2011/4/19 1:26:00 Author:Nicole | Keyword: color lamp, piano music | From:SeekIC

As shown in the figure, it consists of clock beat generator, light control circuit, middle power amplifier and AC depressurization, steady voltage circuit. CA3130(IC1) is a BiMOS single operational amplifier, it with RP1, R3, C1 will from a self-excited oscillator, the oscillation frequency depends on the charge and discharge time of RP1, C1. Its output beat pulse is used as SH-818 function control pulse.



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