Illumination Controller (26)

Published:2011/7/7 5:33:00 Author:Sue | Keyword: Illumination, Controller | From:SeekIC

The 220v ac voltage will provide IC with 5v direct current working voltage after it is rectificated by VD1-VD4, limited and reduced by R1, stablized by VS, filtrated by C1. IC's Q1-Q8 serve as control output terminals. B1-B4 terminals serve as various choices control terminals. By changing the connection settings of B1-B4 terminals, the control signals of Q1-Q8 terminals can be changed. IC's pin 3-5's inside circuit, RP,C2 constitute oscillate circuit. By adjusting RP's resistance value, illumination cycle frequency of illuminations can be changed. After IC begins to work, its Q1-Q8 terminals will output changing control signal according to the given program. By controlling the connection and disconnection states of VT1-VT8 by R2-R9, HL1-HL8 can twinkle according to the given illumination modes.



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