Multimeter use on bridgelux 1 foot setup
Out of curiosity, what is the highest voltage you are seeing out of the EB2? I am building my own power supply out of cobbled together parts from an old server and I was wondering the highest voltage I can fix it at. I will be able to dim the amps via a pot but not the voltage and i want to give it the most oomph when I need it.
Thanks for the help./
Thanks for the help./
Unless your running them really hard or hot, they should run at the voltages rated in the data sheet.
That's my experience at least.
What's your reason for building your own power supply?
Honestly just because I think it would be interesting and I have the several high efficiency server power supplies that my office gave me after a recent upgrade. The spec sheet says 19.4 - 21.6 with typical @ 20.5 but I was just wondering if anyone has an experience running them hard and what that voltage is. I wish Bridgelux had a simulator for these so i can get more specific data than inferring from the lower resolution graph. With no other input, I will likely set them for 21v.
So I managed to sort this out with an extra Wago. Thanks for your help.
However it produced an interesting result.
The voltage out of the driver as expected (hlg-150h-20B) is 20.1V. No worries. Also as expected, voltage across the furthest strip is a bit lower at 19.86V. More if a drop than I thought but ok.
What is throwing me though is the current draw. Right from the driver, the current draw is only about 4.6A. This is with the potentiometer (100k Ohm) maxed. I'd have thought, checking the data sheet for the bridgelux strips (eB series 2, 1 footers) that the amperage would be more like around 6A (12*0.5A) at this voltage.
Not quite sure what is going on here. Plants seem to be fine with it, even dimmed (they're only young) but still, I thought the total power draw would be bigger according to the datasheet..
However it produced an interesting result.
The voltage out of the driver as expected (hlg-150h-20B) is 20.1V. No worries. Also as expected, voltage across the furthest strip is a bit lower at 19.86V. More if a drop than I thought but ok.
What is throwing me though is the current draw. Right from the driver, the current draw is only about 4.6A. This is with the potentiometer (100k Ohm) maxed. I'd have thought, checking the data sheet for the bridgelux strips (eB series 2, 1 footers) that the amperage would be more like around 6A (12*0.5A) at this voltage.
Not quite sure what is going on here. Plants seem to be fine with it, even dimmed (they're only young) but still, I thought the total power draw would be bigger according to the datasheet..
It's worst than you think, you should have measured 7.5A at full brightness. Try again after removing the dimmer?clayts wrote: ↑Tue Nov 13, 2018 9:05 amRight from the driver, the current draw is only about 4.6A. This is with the potentiometer (100k Ohm) maxed. I'd have thought, checking the data sheet for the bridgelux strips (eB series 2, 1 footers) that the amperage would be more like around 6A (12*0.5A) at this voltage.