activeload

Active Load with microcontroller

This repository contains the hardware design, the firmware and the GUI software of my active load device.

Features:

• Power supply from around 3.3V to 40V
• Should be powered by device under test
• Alternative power supply via USB
• Maximum dissipated power: Around 12W permanently at room temperature
• Maximum current: 3A
• Robust (protected from overvoltage, overcurrent and overtemperature conditions)
• Device under test should be connected via banana plugs or screw terminals
• A PC should be able to monitor the actual current and control the desired current via USB
• Small display to monitor actual and setpoint current
• Rotary encoder to change setpoint current
• Small (5×10 cm)
• Measure temperature at heatsink

The whole design process with a lot of details are written down in my blog.