motor headlamp auto-changing controller（4）

Published:2011/7/25 2:10:00 Author:chopper | Keyword: motor, headlamp, auto-changing controller | From:SeekIC

This example describes motor headlamp auto-changing controller produced by CD4011 digital integrated circuit,it can automatically transform the high beam and low beam of motor when the motors meet(turn the high beam into low beam),and it will resume after meeting.The principle of circuitThis motor headlamp auto-changing controller includes power supply circuit, optical control circuit,and control executive circuit,which is shown as picture7-4. Power supply circuit is formed by the current limiting resistor R4, three-terminal voltage regulator integrated circuit IC2 and filter capacitor C. 　　Light control circuit consists of resistor R1, photosensitive resistor RG and four nand-gate integrated circuits IC1 (D1-D4).



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