How to power up LED strips

P

psilomapi

Member
I want to power up two strips from Samsung f series gen 3 using one PSU. They are 46 V and 1.12 A.

I’m not an expert, but putting those in series would require 92V which is high (I’d rather work with lower voltages for safety).

This leaves me with putting them in parallel in a 46V PSU that has at least 2.24 amps of juice.

Also, what happens if I put a PSU that has more amps than the maximum supported? Do they stay “unused”?
 
Use a CV driver which has a voltage range like a hlg 240-48a/a/b/ab


Or a meanwell power supply like a LRS-xxx-48 with adjustable voltage

LRS-350-MEAN WELL Switching Power Supply Manufacturer

MEAN WELL is one of the world's few standard power supply mainly professional manufacturers, covering 0.5 to 25,600W products are widely used in industrial control, medical and other fields, in line with international safety certification, short delivery of spot inventory.
www.meanwell.com

You have to be careful , if you have 7amps on a 48v driver and only two strips it will run them at 3.5amps each, so work out what wattage you need from the current and voltage and match to that.
Check the data sheet of the strip to make sure your not over max rated current.
Ideally run soft for higher efficiency
 
coreywebster said:
Use a CV driver which has a voltage range like a hlg 240-48a/a/b/ab


Or a meanwell power supply like a LRS-xxx-48 with adjustable voltage

LRS-350-MEAN WELL Switching Power Supply Manufacturer

MEAN WELL is one of the world's few standard power supply mainly professional manufacturers, covering 0.5 to 25,600W products are widely used in industrial control, medical and other fields, in line with international safety certification, short delivery of spot inventory.
www.meanwell.com

You have to be careful , if you have 7amps on a 48v driver and only two strips it will run them at 3.5amps each, so work out what wattage you need from the current and voltage and match to that.
Check the data sheet of the strip to make sure your not over max rated current.
Ideally run soft for higher efficiency
Click to expand...
So the current is distributed equally between equal LEDs? How do I know one of the strips won’t pull more current than the others and burn?
 
psilomapi said:
So the current is distributed equally between equal LEDs? How do I know one of the strips won’t pull more current than the others and burn?
Click to expand...

Well, because each LED has a rated maximum amperage draw. You should easily be able to calculate the current that will be drawn by each strip.
 
psilomapi said:
So the current is distributed equally between equal LEDs? How do I know one of the strips won’t pull more current than the others and burn?
Click to expand...

Any difference will be minimal and you wont be running them hard, but you can dim the voltage so it flickers and then turn it up a bit so it stops.
ou need to check the data sheet of the strip to match your driver so its not providing more current than max rated.

Or just wire in series, instead , its not a lot of voltage.
 
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