Tagged: PSU

August 6, 2018

Power Supply 12.6V 25A from old Microwave Oven Transformer

Dig out that old microwave oven transformer you’ve been saving and take a look in your junk box. It’s time to build that battery eliminator you need for the mobile rigs. Although the transformer...

DIY / Schematic

July 25, 2018

Variable Power Supply Unit. DIY.

This little circuit is a copy of a design which was built around twenty years ago. The heart of the unit is based around a 723 regulator chip. It has variable voltage and current...