Hard to say since there is no graph corresponding to fig 8 showing Rds-on as a function of gate voltage. It’s not just how low the resistance is but how much voltage needs to be applied to the gate to get that low number. My guess is it’s pretty good but that would be just a guess based on what the graphs usually look like. Things like thick wires, spring, and switch mods will likely have greater impact at this point. Also paying particular attention to electro mechanical connections like threads and rings is important.
I’m using windows 10 Tech Preview, 64bit, and everything worked thus far. The only Issue i had was with installing the Usbasp drivers, for that you would have to disable the driver signature enforcement , Pretty sure you’ll have to do that with windows 8 PC as well.
Yeah i agree i would think if there is any more improvement to be had from better MOSFET’s it is in under a 1% more output from a single battery single led application and more can be gained by those resistance lowering tune ups you mentioned, but it is still possible some more to be had when they release it and that is always nice
I know i will keep my eyes open for it when i buy some more stuff from the regular suppliers like farnell in the future.
Thanks sinner, that makes sense to have the resistor in series with the zener diode. Also, I realised that I missed out the portion on D1/R3 in the first post which explains the same thing.
I’m not sure about tips on programming in general, but I’ve collected and published several firmwares in one place for convenience (including source when possible). The link is in my signature.
I’ve been trying to collect as many as I can there, but I’m pretty sure I’ve missed some, and a few are still on my todo list.
I just added several more firmwares too, since I had a few on my todo list. And I’m pondering ways to tag the firmwares with relevant hardware requirements, to help people navigate the collection. Like, this one requires an e-switch, that one requires an off-time capacitor, etc.
I had another go at the 17DD single-sided V024 with zener mod, and succeeded this time :-) I used a MCU from a AK-47-A driver, so it is 5%-25%-100%, with on-time memory, not the greatest UI but it is what I had. I used it for a Convoy S8 mod with a XHP50. In the end I think I crushed one of the 18350 batteries resulting in halving the output :-( , but it was close to 2000 lumen at first. I ordered new batteries to see if that was what happened.
board soldered onto the pill.
short brass pillar for batt+, space was tight in the battery tube with 2x18350's.
there you go:
I posted two beamshots in OL's XHP50/70 beamshot thread, but I still have to do tweaks to the focussing, it can become better than that.
Thanks for updating us djozz. It seemed safe to assume that you wouldn’t have any additional problems after those last learning experiences. I’m glad this one went together without issue.
I must admit… I love the gaudy, saturated look the gold plating takes on in your photos.
Odd about crushing the cell. I’ve never squished one that badly, as far as I know. I’ve only dented the end about 0.5mm or probably a little more.
I’m way behind on that thread. (133 posts behind…)
Yeah i found it on google also when i searched on it, but you said “still the best candidate” implying that this was common knowledge that it was, thats how i read it anyway.
When i compare the fig.8 “Drain-source on-state resistance” in the data sheet i think the PSMN0R9-30YLD looks much better.