LED Holiday lights controller circuit diagram 6

Published:2011/3/30 20:37:00 Author:Ecco | Keyword: LED Holiday lights, controller | From:SeekIC

The LED holiday lights controller introduced in the example can display four sentences four words composing of many LEDs(such as celebrating May Day and long live our motherland ), and they display in time sequence to add festive atmosphere to festive night. Circuit principle of work This LED holiday lights controller circuit is composed of power supply circuit, pulse generator and control circuit and LED display circuit component, as shown in figure. Power circuit is composed of voltage step-down capacitor Cl, bleeder resistors Rl, rectifier diode VDl, VD2, voltage-regulator diode VS and filter capacitor C2. Pulse generator is composed of time-based integrated circuit ICl, resistor R2, R3 and capacitor C3, C4. Control circuit is composed of decimal count/pulse splitter integrated circuit IC2, diodes VD3, resistors R4 - R8 and capacitor C5 and thyristor VTl-VW.



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