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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.

electronic help

  1. clinot

    Help activating a solenoid via a capacitor when power is cut

    The goal is to create a circuit that activates a solenoid when the supply power is cut, using power stored in a capacitor. So far the issue I have been running into is that the relay is energized by the capacitor when power is cut, and the solenoid on NC remains stationary. If the ground for the...
  2. L

    Trying to build a custom 7-segment display clock

    I'm a beginner in electronics and circuitry, and for one of my first projects is to build a digital clock with 7-segment displays that shows the following 3 numbers in this specific way: 6 - without the "A" segment illuminated, meaning 6 only has 5 segments illuminated instead of the normal 6...
  3. T

    Electronic collector who knows not what he buys, help??

    So I am a electronic lover and collector, I have always loved and been into electronics especially the older stuff, problem is my skills and knowledge lack not because of effort but really it's time and being allowed you see I am married my friends and have 4 kids 1 is a feisty 9 months ... the...

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