Uploaded April 2025 | Updated September 2026, 1 week ago

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In this video I'm gonna show you how to build a simple and super useful triple power supply that can save time and money in your lab.
It combines a dual supply and a single supply, with fixed, selectable voltages and current limits.
No waste of time adjusting voltages. No need of pairing variable supplies.
Perfect for powering both #analog and #digital #electronics.

And set apart the transformer and enclosure, it costs less than 10 euros in components.

It can be made into two versions: 1.5A and 3A, with slight changes.
The video shows not only how I built the circuit board, but also I provide a comprehensive explanation of
how the circuit works and even the 3A variant with better current limiters.

I included this power supply into my larger Ultimate Power Supply, that you can see in
this video: youtu.be/vEN0uJqn0ko

Also here you can watch how to add more coils to a standard toroidal transformer: youtu.be/eEUMS0inlV8

Complementary information and more on my website at: https//accidentalscience.com

Watch the full series of #Electronics:
youtube.com/playlist?list=PLwbCeSU2Kq_zORt4un2iQ3JUYxzWF3cTJ