I have a PSU for a LED panel. The PSU says 'dimmable. Leading edge or trailing edge.' Well it is dimmable. I tried it with a really old dimmer switch and it dims OK and is stable. Of course below a certain level it goes out, but I expected that. But the thing is, I'm going to buy a new dimmer anyway. Should I get leading or trailing edge?
Bill
Some dimmable LEDs aren't picky, but the ones that are seem to recommend trailing edge.
Correct. No idea why.
Because they can withstand a fast turn off better than a fast turn on?
They dont blow up. They just flicker.
Get one that can work as either eg a Varilight V Pro and you can also set the minimum brightness on them.
Ordered. Thanks Adam.
Bill
Depends on the internal PSU. CR types do die, as the R dissipates way beyond design heat on a chopped waveform. Electronic supplies are happier.
NT
Have something to add? Share your thoughts — no account required.
Ask the community — no account required