Cheap eBay LED power supply.
Added 2018-02-11 15:46:48 +0000 UTChttps://www.youtube.com/watch?v=Rcuk8wPinkM
This video started off badly with me misplacing the tiny supply completely and taking about an hour to dig through all the stuff in the vicinity before finding I had randomly placed it on one of my pinball machines.
It's a good demonstration of why it's better to use these PSUs at half their rated current if you want a good long operational lifespan, but the circuitry isn't too bad at all.
It passed a 2kV test once the slight issue of arcing to its case hardware had been resolved. If the same supply was used with no ground connection it could potentially become live if the same issue is present in other units.
Comments
Hi Clive, you might want to read into off-line flyback converters and TL341 controller design. The TL341 is more like an adjustable Zener diode and the parts around it form the controller transfer function.
2018-02-12 19:45:33 +0000 UTCClive - you at the Scotland/France rugby match? Saw a shot of your double......complete with painted face :D
John Carr
2018-02-11 16:33:22 +0000 UTCExtremely relatable.
Jeremy Impson
2018-02-11 16:17:28 +0000 UTC
