Remote on-off switch

Posted on Apr 2, 2012

This circuit provides power control without running line-voltage switch leads. The primary of a 6-volt filament transformer is connected between the gate and one of the main terminals of a triac. The secondary is connected to the remote switch through ordinary low-voltage line. With switch open, transformer blocks gate current, prevents the triac from firing and applying power to the equipment

Remote on-off switch
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Closingthe switch short-circuits the secondary, causing the transformer to saturate and trigger the triac.

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