I need some opinions, I was thinking on buying this driver from FT to re-upgrade my M10, I ordered a XM-L2 emitter and was thinking on ordering this driver also! But I think, actually I am sure 5 Amps are too much, I just wanted a max of 4 Amps, but FT only sells 5A and 3A V10+ driver, I know IO has the 4A ones, but I prefer buying from FT.
Regarding cells, probably Panasonic NCR18650 cells wont deliver 5Amps, so if I go with this driver what can I expect? Some kind of direct drive on high (due to discharge current limitations) arround 4Amps maybe??
we don’t have the ability to do a thermal analysis so i can’t say for sure if 5A would be too much, but keep in mind your battery life will be pathetic for a few extra lumens and amperage won’t stay in regulation for long
gords, i know what you think!!! Go for the Intl Outdoor 4A driver!!! LOL
Bort, true, battery life will be very short…. but that is not a problem because I have ramping mode, selectable 1 to 100% output and also high, mid, low modes (100–35–10%), so I can use medium for normal tasks and high just for WOW!
I meant no, 5a would not be too much. you’d want a sinkpad to deal with the current but I’m pretty confident in the hosts ability to deal with the heat, wether you’d actually see any gain by eye? that I’m not so sure about.
Ok, I know that above 3A the eficiency is very reduced, it will generate a lot of heat and a small increase in lumens, but I want the maximum lumens I can get, and the 26650 cells are a good thing, I just need to buy them!
I have some Arctic Colling MX2 and will use some under the emitter and probably on the pill threads also to help transfer the heat to the fins.
This light will have very little use, just 5 or 10 minutes at a time. And if i need to use it for longer I can set the output to a lower setting.
My biggest doubt is, if I use it on high will it be safe to use? Probably I will have to get some desolder wick and braid the springs with it. Will the tailswitch hold?
Hey. I just bought one of those this morning. I don’t know what I’m going to do with it exactly, but I was thinking of putting it in my EDC PLus TorchLite host. As soon as I saw it was a ramper, I added it to my cart.
Yes, 5 amps is to much. All you will do with the extra current is make heat. Unless this was cooled by a freezer you will get no benefit. In the same breath just do it.
A diagram may be better but Photobucket got too cumbersome for me to use.
This may help:
an ideal current source can be modeled as an infinite voltage in series with a resistor of infinite value such that the V/R ratio equals the setpoint current. Unfortunately, infinity divided by infinity gets a bit weird.
The real world sources simulate the infinite R value with circuitry and the ‘infinite’ voltage is the supply voltage minus a volt or two.
Anyway, with this model you can work out on paper how the external circuitry is likely to affect the 7135.
For really strange circuitry, look up nullator, norator and gyrator.
