• 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. E

    Solid-state audio amplifier complexity vs valve/tube

    This posts aims to get opinions about why solid-state audio amplifier circuits are almost invariably much more complex than valve/tube amplifier circuits. One could think that, if a good tube circuit is just redone, susbtituting each tube by a transistor (common cathode by a common...
  2. E

    Measure 500V DC with digital scope and 100:1 probe

    Hello everyone. As this is a safety issue, and I'm not sure, I would like to ask instead of experimenting. Most digital scopes state a maximum input voltage of 300 V RMS. I want to make some quick measurements on a live tube amp circuit and its power supply, which may go a little bit over that...

Latest threads

EE World Online Articles