Lavatory automatic flusher 3

Published:2011/5/17 1:33:00 Author:Nicole | Keyword: Lavatory, flusher | From:SeekIC

The circuit work theory This lavatory automatic flusher circuit is composed of power supply circuit, infrared transmitting circuit, infrared receiving process circuit, delay amplifier circuit and control implement circuit, the circuit is shown in the figure 9-131. The power supply circuit is made of power switch S1, power transformer T, bridge rectifier UR, filter capacitors C2, Cll、Cl2, resistors R4, R13, R14, voltage stabilizing diodes VS1, VS2 and power indication LED VL2. The infrared transmitting circuit consists of infrared LED VL1, resistors R1-R3, potentiometer RP1, capacitor C1 and time base integrated circuit IC1. IC1 and R1-R3 form multivibrator.



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