Basic PSU with 78xx voltage regulator

In many cases it is useful to have a easy to build fixed voltage PSU at hand. For this case I have made a PCB which works with the 78xx series voltage regulators in TO220 housing. The implementation follows closely a straight forward design as in the data sheet. I have tested this design with a current load of 1A for some hours. No problems whatsoever.

Specs and features
• Input: Select transformer according to your needs
• Output: Voltage depends on the regulator used / 1A DC

The documentation for download can be found in my website.

Basic PSU with 78xx voltage regulator schematic

Nothing special here. Just refer to the data sheet of the 78xx. Calculate R1 to keep the current through the LED within the specs.

Basic PSU with 78xx voltage regulator