A Passive Light-controlled Switched Circuit Diagram

Published:2011/9/3 19:59:00 Author:Zoey | Keyword: Passive, Light-controlled, Switched Circuit Diagram | From:SeekIC

Following picture shows the passive light-controlled switched circuit. Generally, light-controlled switches need power supply. Although integrated light-controlled controllable silicon switches do not need power supply, they have to satisfy the requirements such as high sensitivity and high pressure resistance. Circuit (a) is a passive light-controlled direct current switch, therein, 2CR1 and 2CR2 are closed gate high-speed light cell, they are used to receive light signals, produce voltage and input current. Circuit (b) is a passive light-controlled AC switch, if the load current is not large enough, it can set the load on AC trigger directly and it can work without the AC trigger.



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