Self-Powered Dummy Load Checks Out Multiple-Output Power Supplies

摘要

As the author points out, this incredibly straightforward active current load covering a 20-mA to 20-A range derives operating power from the devices under test (DUTs). For this particular design, the target DUTs are multiple-output power supplies, including those with floating outputs. Load current is adjustable via a 10-turn potentiometer while an analog panel meter displays voltage levels across the loads, allowing users to monitor several dummy loads simultaneously.