• 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.


  1. sr13579

    What is wrong with my transformer output?

    The thing is, I was trying to regulate a 220V-9V to 5 volt. I did it though. Everything was right.I was trying to make a dark sensor with NOT gate () The settings are good. But it wasn't working fine with the AC to DC adapter.( It is working fine with a battery like the video). The thing is...
  2. E

    Help with grounding in a power amplifier

    Hello. I'm building my first stereo amplifier, and I would like to share with you the ground/earth scheme I designed, for anyone to point errors in it, and hopefully make a better approach. It is based on local star ground scheme. The amplifier is splitted in three boards: - Power supply -...
  3. Hackpenguin

    Anti static grounding

    Hi,I'm wanting to put a anti-static mat in my garage. I have this power strip with a ground LED and it doesn't light in the garage. But when I goto my room, it lights up. I need advice on how to fix this problem

Latest threads

EE World Online Articles