MegaSack DRAW - This year's winner is user - rgwb
We will be in touch
Hi all,
First time poster, so please be gentle! I've caught the bug for self-build lights and I want to get started on a design for 4 x XP-G bar light, but I just wanted to run the plans past someone with a bit more experience!
I'm looking at running from a pair of 7.2v (3Ah) batteries in series with a bFlex driver. Forward voltage on the XP-G, I believe, is 3.2v.
Am I right in thinking the bFlex driver doesn't change voltage at all, and if so, am I okay running the XP-Gs at 3.6v each (14.4 / 4) ?
I read that the bFlex will require a minimum input voltage of total VF + 1.1v (at 1000mA), so I think I'm okay on that front, as I calculate that to be 13.9v ((4 x 3.2) + 1.1) I would configure the bFlex to cutoff at, say, 14v.
Thanks in advance
seems like something I'd be interested in also... If you have access to a variable output PSU then turn the output up slowly until the bflex board LED triggers on, if nothing works then connect a light - then measure the inputs/outputs on the bflex.. But I'd do this only if no support from the manufacturers were available. Not being a electronics guru myself, I seem to raise more questions than answers - but that is something i'd try. The config you mentioned seems ok, the voltages don't seem excessive and you have upto 25volts posible on the Bflex input anyway. Your also within the LED limits - but that might be a reason to check the Bflex output before connecting the LED lights
Vf's tested here!
http://www.candlepowerforums.com/vb/showpost.php?p=3115908&postcount=354
IIRC the bflex needs 1.5v headroom