LED Festival Illumination Controller (5)

Published:2011/7/10 7:43:00 Author:Sue | Keyword: LED, Illumination, Controller | From:SeekIC

The 220v ac voltage will provide LED drive circuit with working voltage after it is rectificated by VD1-VD4. The other circuit will provide IC with +6v working voltage after it is limited and reduced by R1, stablized by VS, filtrated by C1. After the oscillator begins to work, it will output low frequency oscillate signals. The signals will be put on V1-V4's base electrode through RP2-RP5 after it is reversal processed by D1-D4. Then V1-V4 are connected intermittently. VL1-VL50, VL51-VL100, VL101-VL150,VL151-VL200 will be illuminated intermittently. By adjusting RP1's resistance value,the oscillator'sworking frequency will be changed. Then LED's illumination effects can be changed.



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