Published:2011/8/28 22:33:00 Author:Jessie | Keyword: Photoelectric transistors, two-way thyristor, AC voltage | From:SeekIC
In this circuit, photoelectric transistor controls thyristor T's conduction angles by incident light. It adds 220V AC voltage on A,B, and La is the load. The stronger the incident light,the bigger thecharging on capacitorC1, the later voltage reaches Two-way trigger tube T2's conduction voltage, the shorter the thyristor's connection time, the lower the power of load.
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