Symmetric Power Supply Controlled by Arduino PWM

Introduction

I intend to give one example of a power supply controlled by an Arduino or by a computer, then other power sources with different capabilities could be built based on this project. The idea is to use the PWM outputs of the Arduino to control the voltage output of a power supply. We apply low pass filters to the PWM outputs, then we can connect them to the power supply. There's also variable resistors on the power supply circuit that can do this. The power supply output is 30vdc and -30vdc, max 10A both.

In this case we will use pin 5 to positive tension and pin 9 to negative tension.

Extract the rar file, go to "bin/Debug/" and then open "power supply interface.exe"

Examples