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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

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  1. T

    12v circuit that stops power output when source power lost

    I'm looking for a circuit to install in my car from my battery to my subwoofer. When I turn on my car I get feedback for a few seconds. I've created a solution to this by installing a rocker switch inline with the power source cutting power to the subwoofer when I need to. I often forget to turn...

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