LED Holiday Lights Controller

Published:2011/8/1 3:14:00 Author:Felicity | Keyword: LED, Holiday Lights, Controller | From:SeekIC

Work of the circuit The circuit consists of Power supply circuit, pulse generator, the control circuit and LED display circuit. (It is showed in picture 1-165.) Power supply circuit consists of buck capacitor Cl, discharge resistors Rl, rectifier diodes VDl, VD2, voltage regulator diode VS and filter capacitor C2. Pulse generator consists of time-base integrated circuit ICl, resistors R2, R3 and capacitors C3, C4. The control circuit consists of decimal counting / pulse distributor circuit IC2, diodes VD3, resistors R4-R8, capacitor C5 and thyristor VTl-VW. LED display circuit consists of four word light displays. Each display consists of 16x16 arrays of 256 word light units. Each word light unit consists of LED VL, current limiting resistor R and the isolation diode VD4-VD7. (It is showed in picture 1-166.)



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