A variable power supply is one of the most important pieces of equipment to have on the electronics workbench.  It's only a matter of time before the ...

Switched Mode Dual Variable Power Supply

A variable power supply is one of the most important pieces of equipment to have on the electronics workbench. It's only a matter of time before the ...

This video covers the basics of linear voltage regulators - what they do, how to wire them up, and where to find them. Then I give a basic example of how to build a 5V supply that can be used to power USB powered gadgets. Don't forget to subscribe! This video builds on material covered in my tutorial on building unregulated power supplies: h...

This video covers the basics of linear voltage regulators - what they do, how to wire them up, and where to find them. Then I give a basic example of how to build a 5V supply that can be used to power USB powered gadgets. Don't forget to subscribe! This video builds on material covered in my tutorial on building unregulated power supplies: h...

Transformerless Power Supply, AC Mains Isolated, Spike Protected Circuit Diagram, Image

Transformerless Power Supply, AC Mains Isolated, Spike Protected Circuit Diagram, Image

PC power supply modification. ATX PSU hack with regulated variable voltage and LCD voltmeter.

PC power supply modification. ATX PSU hack with regulated variable voltage and LCD voltmeter.

Power Supply for Arduino Projects

Power Supply for Arduino Projects

0-60V Dual Variable power supply circuit using LM317&LM337

0-60V Dual Variable power supply circuit using LM317&LM337

Are you tired of including bulky transformers to power smaller circuits? Two simple and useful configurations of small and compact power supplies using high voltage capacitors are discussed here, as well as one attempted - and failed - experiment. The first one though very compact is not spike free and not isolated from AC mains, therefore is not very practical. The second one is able to cancel of the spikes but still is dangerous as it’s not free from electric shock. The last one, was hoped…

Are you tired of including bulky transformers to power smaller circuits? Two simple and useful configurations of small and compact power supplies using high voltage capacitors are discussed here, as well as one attempted - and failed - experiment. The first one though very compact is not spike free and not isolated from AC mains, therefore is not very practical. The second one is able to cancel of the spikes but still is dangerous as it’s not free from electric shock. The last one, was hoped…

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