DiY LEDs - How to Power Them
- Thread starter SupraSPL
- Start date
coreywebster
Well-Known Member
It depends on what space he's lighting up with them 8 boards.
I will let you know when you reply if you haven't already sorted it
ronintank
Well-Known Member
He got it taken care of. Thanks.
Airwalker16
Well-Known Member
You'll need to turn your vO potentiometer screw counter clockwise slowky with it all wired up and on to get the voltage right. Those are 50V cobs and your driver barely hits that. Luckily it can at least. Also, yes they can be run at 100w a piece but you'd be safer using 8
shimbob
Well-Known Member
What? A -54 driver barely hits 50V?
Airwalker16
Well-Known Member
I'm VERY surprise that they have as much wiggle room as they do. Wow... 45.9v? Insane.
Airwalker16
Well-Known Member
I'm 99% positive you can't use, say 27v strips on an HLG-480H-54A. Someone please correct me if I'm wrong...
shimbob
Well-Known Member
Look at the test report, under Constant Current Region, 11.38A at 27V and 11.43 at 53V.
Hi everybody !
I'm building a setup with 4 times Cxm22 gen4 at 3500k ,50v, 52.8 watt, 1,050mA
Can i drive these 4 led cobs in series with an HLG-320H-C1050B ?
Will the voltage auto adjust to the need of the leds ?
If anyone can verify this would be a right choice please let me know.
Thanks in advance , Joe
I'm building a setup with 4 times Cxm22 gen4 at 3500k ,50v, 52.8 watt, 1,050mA
Can i drive these 4 led cobs in series with an HLG-320H-C1050B ?
Will the voltage auto adjust to the need of the leds ?
If anyone can verify this would be a right choice please let me know.
Thanks in advance , Joe
Rocket Soul
Well-Known Member
Yes, you can run it using that driver but its far from ideal, youll only get just over 200w out of that driver which is 320w. This means driver efficiency will be affected downwards normaly, amount is in the datasheet. Best to try to run drivers close to max for peak efficiency.
Thanks for the quick reply ! So ELG-240-C1050B would be better ? , i read somewhere you need 1/3 more driver capacity than actually used because of the peak power when turning them on ?
Barristan Whitebeard
Well-Known Member
The HLG-240H-C1050B will come closer to maxing out the voltage with 4 CXM 22 Gen 4, and will run more efficiently( by a percentage point or two) than the HLG-320H-C1050B considering that the load percentage will be higher.
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Thanks a lot for the help Barristan! I read on a website the driver capacity should be 1/3 higher than the actual use because of the start up peak power. Is this not true ? I'm a little confused. And does the driver regulate the voltage automatically to get the optimum voltage for the leds ?
Barristan Whitebeard
Well-Known Member
ELG-240-C1050B would also be suitable and save you a few dollars.
Are you running on 120 VAC or 240 VAC?
Do you have a link to where you read that about driver capacity?
I'm running on 240VAC, so the ELG would be 240w , but what's the difference other than the price ? Specs seem about the same or am i missing something ?
I read it on conrad.nl a dutch electronics website. it states this as a warning on every page with a led driver:
google translation:
Important information! Do not choose your LED driver / LED transformer too small! Use one that has about 1/3 more power (watts). Decisive for the load of the LED driver is not the information about the watts of the LED manufacturer, but the actual power consumption (amps) of the LED. Also keep in mind that the inrush current is significantly higher.
Edit:
I read in the datasheet of the meanwell, Inrush current: 75A. Maybe this is the maximum current for the leds to draw when they start up ?
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Rocket Soul
Well-Known Member
The ELG version drivers are only recommend for +200V AC, theres downrating on 120V. If your on 120V use the hlg240h-c1050
The extra capacity youre talking about: this is with regards to AC fuses but can be avoided by not switching multiple drivers at the same time. You dont need extra capacity on your driver though.
Ok thanks for the help Rocket Soul
I read in the datasheet of the meanwell, Inrush current: 75A. Maybe this is the maximum current for the leds to draw when they start up ? If so it would be correct i don't need a larger driver and the statement on the website wouldn't apply to this driver.To Barristan: (my message is awaiting approval)
I wrote:
I read it on conrad.nl a dutch electronics website. it states this as a warning on every page with a led driver:
google translation:
Important information! Do not choose your LED driver / LED transformer too small! Use one that has about 1/3 more power (watts). Decisive for the load of the LED driver is not the information about the watts of the LED manufacturer, but the actual power consumption (amps) of the LED. Also keep in mind that the inrush current is significantly higher.