Simple dual constant-current load tests low-current power supplies

Focus:

An electronic load built using a simple circuit can be used to test power supplies with 50-mA to 1-A output. This test circuit provides greater accuracy than higher-power, off-the-shelf loads and offers a less-cumbersome alternative to resistive loads.

What you’ll learn:

• How to test low-current switched-mode power supplies
• How to build a low-current, battery-powered electronic load

Notes:

An EDN Design Idea

View the Source

Author & Publication:

John S Lo Giudice, STMicroelectronics, Schaumburg, IL; Edited by Charles H Small and Fran Granville, EDN, Jun 21 2007

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