The lighting lamp power-off self-lock switch circuit

Published:2011/6/29 5:59:00 Author:Seven | Keyword: lighting lamp, self-lock switch | From:SeekIC

With ordinary wires controlling the lighting lamps, if the power is off, it's hard to tell whether it's ON or OFF, so it always causes the power waste when the power is on at night. If we replace the ordinary wire with the figured circuit, the weakness will be gone, which can self-lock when the power is coming back and the lamp won't be on. VTH is decided by the power of the lighting lamp, which can be the micro plastic packaged dual-way thyristor (3A/600V) of BCR3AM.



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