Gary Pimm Power Supply Tester
author: Peef
2 layer board of 1.69 x 1.97 inches (43.0 x 50.0 mm)
Uploaded:
July 25, 2023
Shared:
July 25, 2023
Total Price:
$16.65
This board is based on Gary Pimm’s power supply tester. The original article is available here (power supply tester, rev 2):
https://web.archive.org/web/20110514215921/www.pimmlabs.com/web/regulators.htm
The tester acts as an electronic load. A trimpot sets the DC load current while a balanced sound card or audio analyzer can send a test signal such as a frequency sweep as an AC load, allowing for measurement of power supply impedance and noise at the balanced output connector.
This version of the tester uses a single MOSFET rather than a cascode to reduce the voltage compliance. The power supply and DUT connect via Mini-fit Jr connectors.
This board is based on Gary Pimm’s power supply tester. The original article is available here (power supply tester, rev 2):
https://web.archive.org/web/20110514215921/www.pimmlabs.com/web/regulators.htm
The tester acts as an electronic load. A trimpot sets the DC load current while a balanced sound card or audio analyzer can send a test signal such as a frequency sweep as an AC load, allowing for measurement of power supply impedance and noise at the balanced output connector.
This version of the tester uses a single MOSFET rather than a cascode to reduce the voltage compliance. The power supply and DUT connect via Mini-fit Jr connectors.
