Faulty power supplies?
Posted: Mon Mar 23, 2020 10:29 am
Hi all
I've outfitted a rack with 16x Bridgelux eb series gen2 10 inch 5000K 19.5 V LED strips, as well as a Meanwell HLG-185H-20A power supply, connected in parallel. The lights do turn on, however, the supply only pulls 47 W from the wall (should be in the order of 100-200 W), and does not react to the potentiometer screw that is supposed to vary the current between 4.6 and 9.3 A. The voltage adjusting screw works fine.
I wrote the seller, and he refunded me right away. So I thought it was just a faulty unit, and I ordered 2x Meanwell HLG-240H-20A supplies, as I decided I wanted some more power, and I also wanted to build another rack.
So it turns out that these 2 new power supplies do the exact same thing, except they pull 54 W instead of 47. Have I just been extremely unlucky, or am I missing something that I'm doing wrong?
What would be my best bet? Should I sent the two units for RMA and ask for the same type of units, or should I ask for another model number? Or maybe an entirely different brand?
If I got the HLG-185H-20 model instead, which has the voltage and current fixed, would the strips accept 20V or does it have to be 19.5V?
Thanks
I've outfitted a rack with 16x Bridgelux eb series gen2 10 inch 5000K 19.5 V LED strips, as well as a Meanwell HLG-185H-20A power supply, connected in parallel. The lights do turn on, however, the supply only pulls 47 W from the wall (should be in the order of 100-200 W), and does not react to the potentiometer screw that is supposed to vary the current between 4.6 and 9.3 A. The voltage adjusting screw works fine.
I wrote the seller, and he refunded me right away. So I thought it was just a faulty unit, and I ordered 2x Meanwell HLG-240H-20A supplies, as I decided I wanted some more power, and I also wanted to build another rack.
So it turns out that these 2 new power supplies do the exact same thing, except they pull 54 W instead of 47. Have I just been extremely unlucky, or am I missing something that I'm doing wrong?
What would be my best bet? Should I sent the two units for RMA and ask for the same type of units, or should I ask for another model number? Or maybe an entirely different brand?
If I got the HLG-185H-20 model instead, which has the voltage and current fixed, would the strips accept 20V or does it have to be 19.5V?
Thanks