Digital Benchtop Power Supply Schematic

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.

Digital benchtop power supply schematic. Every electronics laboratory needs a powerful regulated bench supply. It s typically used by electrical engineers circuit designers and other professionals in similar lines of work. They range from linear purely analogue supplies with only voltage regulation to switching supplies. Power supply is based around a lm723 voltage regulator chip and has current limiting.

A benchtop power supply is a tool for testing and measuring circuit systems by providing direct current dc voltage power to the device under validation. 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. An old pc power supply unit makes an excellent and cheap bench top power supply for the electronics constructor. Presented here is a circuit for 30v 10a variable bench power supply that offers variable voltage and current adjustment.

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