Do I need a constant current or voltage power supply to drive 12V Halogen lights?

[duesentrieb]

My apologies for this basic question. I need to replace a 12V power supply to drive 2x 20W halogen lights.

I found this power supply that would meet my space requirements (height):
https://www.amazon.com/DUSKTEC-LED-Driver/dp/B0BYDV5SHY?th=1

This one states "constant voltage". Will this work if I wire halogen lights in parallel?

 

[crutschow]

This one states "constant voltage". Will this work if I wire halogen lights in parallel?

If the bulbs are filament type halogen lamps, the a constant voltage supply will work fine with the lamps in parallel.

 

[Bluejets]

My apologies for this basic question. I need to replace a 12V power supply to drive 2x 20W halogen lights.

Led driver not made for Halogen lights which do not require either constant voltage or constant current.
Halogen lights are a thing of the past, wayyyyy too much heat dissipation.
It might work though, as they say , suck it and see.
Can only cook itself.

I'd be buying a couple of LED lights which, complete, and plug straight into mains supply, would be less than what you intend to pay for the LED driver.

 

[dave9]

Yes that should work, but ideally for long life, I would want something rated for more than 5A, to power a ~3.3A load. Opinions may differ but when choosing a generic chinese PSU, I want more current margin than that, as some aren't even accurately rated in the first place.

You could use something constant current rated instead, but I would want to measure the actual current consumption of these bulbs in parallel at a constant 12V in order to know what that constant current is, so far easier to just get a traditional 12V voltage regulated PSU.

I agree about considering use of LED bulb instead of incandescent, unless this is a unique situation like landscaping lights, where in winter, you want the extra heat to melt off snow and ice. I mean that even if this is an existing lighting product like under-cabinet lighting, you could replace the 2 x 20W incan bulbs with LED bulbs and then not even need as much as a 1 amp PSU to provide as much LED light, but would still want a 12V, voltage regulated PSU for a bulb rated for 12V.