Anybody tried the ELG version of Meanwells, Rather than HLG...

[boybelue]

If you have a driver that gives exactly 24V and 10 amps then if you connect a chip that takes 1 amp at exactly 24 v and you connect it: the chip will take one amp, it cant push 10 amps thru at that voltage. With a A-type menawell you can change this up a down slightly.

Afaik

Ok so no matter how much current the driver pushes the chip will only accept a set amount of current at a specific voltage?

 

[Rocket Soul]

Yes, essentially. It will also accept lower current. The voltage only sets the max current. Remember also that voltage will change with temps.

 

[boybelue]

Yes, essentially. It will also accept lower current. The voltage only sets the max current. Remember also that voltage will change with temps.

Yea thats what i was unclear on. My way of thinking was that a 36v cob as long as it had 36v it could accept any current as long as it had the voltage to operate. I didnt know voltage limited the current.

 

[boybelue]

I was thinking if you placed one 36v cob on a constant voltage driver, like a hlg240-36 that it would deliver all the wattage to that single cob. Also if you ran one cob on a 240 driver would it just pull what the cob pulls from the wall or is that extra wattage lost? I assume it would be lost or there wouldnt be changes in efficiency.

 

[Rocket Soul]

There is allways energy loss in ac to dc conversion.

 

[boybelue]

There is allways energy loss in ac to dc conversion.

I guess my point was that the driver will put out its rated wattage no matter how many cobs. There wouldnt be no changes in efficiency if the driver just supplied what the string needed.

 

[Rocket Soul]

Efficiency goes down if the driver is not under full load. Check the datasheet for the derating curve