instrument-panel lamp dimmer

Published:2011/7/12 22:29:00 Author:chopper | Keyword: instrument-panel lamp, dimmer | From:SeekIC

Drivers may feel very harsh at the moment the instrument-panel lamp is open at night.This example describes the instrument-panel lamp dimmer,which can reduce the visual impact of the drives,thereby it can enhance the safety of night driving. 　　The principle of circuitThe instrument-panel lamp dimmer circuit is formed by the voltage regulator circuit,reset circuit,square-wave oscillator,protection circuit and electronic switching circuit,which is shown in figure 7-35. 　　Regulator circuit consists of resistorsR1 and the voltage regulator diode VS. 　　Reset circuit consists of capacitor C1, resistors R3, R4.



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