I cannot find a suitable single cell driver, it has been years searching.
Background: I want to build a second 21700 light that I will actually use. 500 ma, on a 21700 (5000 ma capacity) will fit 95% of my workdays. 600 mA will fit about 50% of my workdays and *1 amp fits about 5%*of my workdays.
- Naturally, icing on the cake is more flexibility in lower modes to allow non work use, and a burst mode of up to 2 amps for 1 minute, mostly for entertainment. Nothing so harmful as over 10 watts- I only use reasonable high efficient leds like the xml u4, xpl v5 and v6.
I built my own 2xamc 7135, controlled by a 555 circuit and a dimmer. But everything was too large to be practical. * I love dimmers.* :THUMBS-UP: Then, I built a dd, using a .33 ohm 5w resistors plus a 25 ohm 3 watt rheostat; it too was a bit too big for my tastes.
A suitable driver board with these settings, or board with infinite dimming would be nice.
mnt-electronics has zero use for me, since I want a suitable run time that matches a workday. I I built a driver I would choose the following modes: 2.5 hour, 5 hours, 10 hours, 24 hours, 40 hours, 100 hours, extreme firefly….10 hour mode is most important by a mile, aka .1C
I don’t understand the modes of http://www.mtnelectronics.com/index.php?route=product/product&path=67_116&product_id=659
Ramping sound good. But the tech told me this driver wouldn’t work. Either the page makes no sense, or he doesn’t know what he is talking about. 540 ma, %18, should work. But not according to the seller…. The other thing I don’t understand is how a FET prevents a light from going over the rated 10W.