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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...
  2. N

    Powering 120mm PC RGB fans from the mains

    Hello all, I hope everyone is having a wonderful May! Just a quick question/project I was hoping someone wouldn’t mind lending some of their thoughts on, please. So I’ve a couple of; 12v 4 pin RGB 120mm PC fans that I would like to install in my networking cabinet. One of the cables on the...
  3. the7deadlymoods

    DC Current Ratings for AC Switch

    Hello all, I am working on a ROV (Robot) for underwater missions. I need a beefy switch for main power distribution, which should be able to handle at least 25 Amps. My current choice is this Rotary Switch: https://amzn.to/2ukEgs2 According to the seller its rated for 10 Amps at 440...
  4. mading2018

    AC/DC converter + Totem-Pole

    Hello, I used the LT8312 PFC controller to controlling the switches, but somehow the switches seems not to operating in the bridge, only the diodes. Do anyone know what could be the problem why the switches do not operate? And how do I change the switching frequency to 150 kHz? I think that I...

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