Remote Living > Lighting

120V LED bulb on DC

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PaulJ:
Just tried a 220-240V 5W Philips LED (non dimmable) on 48V dc and it works ok, I'd guess a bit more than half as bright as normal.
Completely cold to touch after an extended run on 48V, it gets quite warm on 240V.

richhagen:
Yes, the Cree bulbs I have are dimmable.  They work down past 32V, but the brightness does diminish. I think they are not at full Brightness at 50V, but they are very usable as lights.  Interestingly, I could switch between 120VAC here and 48VDC here on a lighting circuit with these bulbs. 

Keep having fun, Rich

DamonHD:
I wonder if you're putting extra strain on the internal regulation electronics?

if not, then you are probably extending the lamps' life by reducing the LED temperatures.

Rgds

Damon

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