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Re: QMX SMPS issues, and a possible cure


 

Don (aka El Destructo),

Can you move that file at 700,000 files per second? Lol… your job sounds like a ton of fun. Hope you’re using the proper PPE. :-)

Tony AC9QY

On Thu, Apr 3, 2025 at 3:19?PM Donald S Brant Jr via <dsbrantjr=[email protected]> wrote:
From the readme:? "Behaves well when output is suddenly shorted and then the short is removed."??
Try this:
The most brutal power supply torture test I saw was to connect the supply output with heavy leads to two 3/8" copper bolts closely spaced in an insulating block.
Energize the supply, then take a coarse file and file the ends of the bolts simultaneously.??
Watch the sparks fly and monitor the supply for instabilities.? The fast, random short/open transitions, with bonus negative-resistance arcs, will challenge any control loop.
I love getting paid to do stuff like that.
73, Don N2VGU

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