Looks great. Can’t wait to see the voltage test.
/K
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My son saw the completed supply and wanted to know what it was.
I told him what it was and he replied:
“Why do you need something like that? Or didn’t you have anything more important to do for four months?”
Stinkin’ uncircumcised heathen!
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Sorry - can’t heart that one, but would be interested in your answer to his question.
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Why do you have a couple of robots?
Why did you jump through all those hoops to get your amateur Extra ticket?
IMHO, if you’re going to work with electronics, a decent bench supply is essential.
I tried to explain that to him, but it was obvious that he really didn’t give a. . .
On the other hand, the granddaughters understood the importance of a good power supply right away and even helped me build it.
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Update:
I noticed an interesting artifact with the supply:
When I turned it on (applied AC power), and hit the master enable, (that triggers the main part of the supply to come on-line), it didn’t always fire up.
I tried several things and - studying a generalized ATX supply schematic - I discovered a resistor network wasn’t included, so I tack-soldered a resistor in and it worked.
So!
I went to improve the workmanship and make it look less like a hack-job, and I accidentally shorted +5v to a low-voltage reference input on the controller IC. No magic smoke but it was dead as a doornail.
So, I went digging and found the “old” new 500w supply from my flight-sim machine, (before I upgraded to 750w and a beast video card), tested it, and swapped it in, replacing the older one.
Result:
Power ready and master power now work correctly.
Next steps:
Calibrating the front panel variable voltage supply modules.
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