I decided to build a DC load box to test a couple of power supplies.
I got a nice 190x110x60mm Aluminium box and a load of high-power resistors from ebay.
The resistors are riveted to the box and 6 4mm connectors provide combinations of resistors to give...
10Ω @ 500W
20Ω @ 100W
along with connections to a
Of course in practice it is best to limit the main load to 200W for a short time.
At the last minute I changed from the 4mm connectors I had been using which I like but need a 12.2mm hole.
I chose these...
Wired it all up, started testing and then my error dawned on me.
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