I figured, I guess incorrectly, that it would stay at 24V and give the rated output….
so i guess I save the driver for something else and find one that will drive 7 or 8 of them from AC power.
they’re each on their own original projector heatsink, but I’m not using the stock peltier or external cooling - i guess i could add a fan easily enough
Constant current drivers should work just fine… they will limit the current that the LEDs are trying to suck… but for full brightness you would want 10 amp ones…
Why do you need all that red light? Opening a bordello?
i guess i’ll order two of those. I wish there was some way to augment what I’ve got, instead of dumping more money into the project, but that’s the way it goes i guess…
red light therapy. a friend with rosacea pays for sessions (like a tanning bed, but red bulbs).
main concern is the face, so these should be much brighter than the bed, even at 3A
Try a current limiting resistor in series with your constant voltage driver. I’d start with a 1 ohm power resistor (5-10 watts) and see what happens. Might need more or less ohms to get it right…
two resistors in parallel, each rated ~12W, for total resistance of ~3.5 ohms did the trick.
2.5 ohms would still flash, 5 ohms was noticeably dimmer than 3.5 ohms.
I epoxied them to heatsinks but they heat up the sinks pretty quick. I’ll need to add a fan to get 20 minute run time, but i’ve got plenty of those around.
at least i’m in business until the slow boat brings me a couple 12V constant voltage/constant current power supplies