Near unity power factor LED driver
Added 2024-04-02 18:09:38 +0000 UTCThis video is a bit deep and may only appeal to the true geeks. It's a cheap AliExpress power supply module with some circuitry that is not actually even mentioned on the chip manufacturers datasheet.
The way the snubber network also delivers power to the chip is quite clever.
Comments
Pretty cool. Thanks Big Clive. It seemed a little flickery on camera so I'm guessing this is not the type of power supply you used to replace your bench light. Would adding a larger cap on the output help that?
Dave Frederick AKA @amorphuc
2024-06-22 00:59:28 +0000 UTCThe current is drawn evenly across the whole sinewave in a series of pulses, as opposed to the usual circuitry where it is all drawn at the peak of the sinewave as it charges the usual capacitor.
Big Clive
2024-04-15 04:50:34 +0000 UTCThanks for the analysis. What about this circuit gives it the high power factor?
clownhands
2024-04-15 02:30:47 +0000 UTCFirst, tolerance and now unity? What is happening here?
Curtis Hoffmann
2024-04-03 03:44:32 +0000 UTC
