12 and 5 Volt DC Power Supply Circuit Board

February 10, 2014

This is a little power supply that provides both 12 and 5 volt DC outputs. It uses the LM7805 and LM7812 voltage regulators to provide the correct voltage so it's good for about 1 amp. This is useful for a project power supply or even a bench power supply. Be aware that these voltage regulators can get warm, especially if the input voltage is much higher than 12v. That's why I have the monster heat sinks on both of them.

Download the Fritzing file for this board for more details on the circuit components.

Here's the test breadboard view. There's not a whole heck of a lot to it.
Screenshot from 2014-02-08 23:44:41.png

The circuit view, which I didn't spend very much time on.
Screenshot from 2014-02-08 23:45:15.png

What the PCB layout looks like.
Screenshot from 2014-02-08 23:45:25.png

Here's a bottom view of the board after it was etched and populated.

Related Posts