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VH5162 festival color lamp with "good luck" voice control

2016-08-09 18:21  
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VH5162 festival color lamp with
VH5162 festival color lamp with
VH5162 is a CMOS festival color lamp control circuit, it has four ways color lamp drive output, eight work modes. The figure of festival color lamp with good luck voice control circuit is as shown. The change of work mode adopts clock sequence control way, the unijunction tube relaxation oscillator generator provides trigger clock. VT1(BT33) and R1,RP1,C1 and R2 form the low frequency relaxation oscillator, its oscillation period is: The η is unijunction tube attenuation ratio, generally η=0.35~0.55.