Digital Benchtop Power Supply Schematic

I often end up with the power clips shorting out on the bench and with no problems.

Digital benchtop power supply schematic.

This variable power supply is using 7805 7809 7812 or 7815 voltage regulators where the last 2 digits desktop pc linear power supply circuit p. An old pc power supply unit makes an excellent and cheap bench top power supply for the electronics constructor. It s typically used by electrical engineers circuit designers and other professionals in similar lines of work. Power supply is based around a lm723 voltage regulator chip and has current limiting.

In the model described here a microcontroller monitors the actual and desired current and voltage settings there are many types of laboratory benchtop power supplies available from the very simple to the highly sophisticated. Every electronics laboratory needs a powerful regulated bench supply. They range from linear purely analogue supplies with only voltage regulation to switching supplies. The main objective of the project is to learn how a linear power supply unit works in the beginning to explain the working principle of a linear power supply i have taken an example of lm 317 based power supply for making the final power supply i purchased a power supply kit from banggood and assembled it.

Presented here is a circuit for 30v 10a variable bench power supply that offers variable voltage and current adjustment.