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  • 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.

variable power supply

  1. T

    Plug'n'play PSU...

    Littered around my house I have a lot of DC and AC power sources - car batteries, power tool batteries, USB 5v wall adaptors 12V DC wall adaptors, old PC power supplies, 12 and 24V AC wall adaptors etc etc I also have a collection of old mains transformers I could use Converting AC to (dirty...
  2. G

    L200 Linear PSU with adjustable output Voltage and Current

    Hi to all. A few days ago, I started thinking to build on my own, a linear power supply able to output 30V 10 A. I chose to use the L200 IC, because I've got some of them and I want to use some components recovered from old boards. I started making the schematic following the application note...
  3. emmsee

    using LTC3780 and ATX PSU to create Variable Lab Supply

    I started out building a Bench PSU (fixed voltages) from an ATX PSU, but have recently watched several videos on the LTC3780 Buck Boost controller and want to now create a variable bench power supply. I watched videos to achieve the variability but using a LM317 voltage regulator. I've seen one...
  4. R

    0-60V 3A Dual Rail Bench Supply

    I'm attempting to build a +/- 0-60V 3A bench power supply using a Large 10 amp transformer out of an old audio amplifier. I got as far as building and testing the rectifier/filter board for +/- 60VDC and then discovered that I can't find any variable supply circuits that will take 60VDC input. I...

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