As most know. The whine is mostly on medium.
If you cant hear it on low, take it up to your ear.
I only use NANJG105C “programmed” to high/low. Cant stand medium.
Despite that I do have a typical 2-group NANJG105C in one of my flashlights, just tried to improve the ground, tested it on low and medium afterwards but still same whine. I tested the pill (with emitter and driver) outside a flashlight too. It whines either way. I have earlier used drivers with PWM boards directly to power supply without pill or anything. Still whine…
Id guess the ability to hear the whine is a combination of age and how sensible you are to the frequency.
The best 17mm driver I have is the one that came with one a P60 cooper drop-in intl-outdoor sold a coupe of months ago. Not available now. Its nicely regulated, have nice modes (100/28/1) and no whine. No components on the spring side of the board either. Low voltage protection/warning and high temperature warning. (The high temperature warning is not that useful though, because it does not lower the mode/output)
There are many drivers out there with PWM noise. I try to avoid them as good as I can.
I Just ordered one of these qlite from inl-outdoor though. Need to test it. Its probably the best 8x7135 board out there considering modes/features/price.
If there is no whine, I will have to order more! It could easily become my favorite driver.
Still hoping something good come can out of the lightmalls custom BLF 4A boost driver…
The whine comes from the switch. Hold the tailcap up to your ear and lightly press the button, not enough to turn off or switch modes, and you can hear the whine change according to thumb pressure. Usually means you need a new (or better) switch.
I accidentally flashed 101-AK-A1 with improper fuses which caused CPU frequency and thus pwm frequency to change (increase). Driver was totally quiet at 40/340/1000 mA.
Funny to hear. Depending on the contact the sound changes. I could get some funny noises when trying out SOS with a half pressed switch. No doubt worse contact leads to more noise.
But as I said. The whine is still there without the switch. Driver board only with power supply, complete pill+battery (no switch or body) or assembled light with a wire on the tail instead of tailcap/switch.
Three nice hosts, cooper sinkpads and some nice tint XM-Ls?
Nope, not it. The OEM D4 (aka Convoy M1) does not have a driver on that picture…
But now it does… Whats on the backside of that pill?
Ahh… just a typical nanjg 105C…
Nope… Not a typical one… Its the Qlite Nanjg 105C!!! … Arrived today, after only 10 days (new intl-outdoor record for me)!
Now, why so happy??
Because silence!!!
There is no noise, no whine!!! Finally!!!
And yeah… The modes are sweet… I have only used it in default mode so far, which suits me perfectly…
Did a say its silent!!??
Looking forward to getting some too for the silence, I simply got fed up with those noises. I even reflowed one of the regular 105C drivers in a brass pill (so the ground connection is rock solid) and it still whines.
My DMM reads: 7,22 on that setting when checking the moonlight mode.
(take it with a pinch of salt)
So thats 0,00722A??
Im not used to moonlight, but for me, its really usable. Could be too high for low low moonlight lovers. But I have no experience with moonlight so what do I know…
Its not that much difference from moonlight to low…
N-light XT-50
Okay, it cant compare with the others in quality. And mine had some scratches on the body. But a decent XM-L zoom light… Quite short, and okay heat sinking (for a zoom light). It ruined the 4000k tint… It got a bit cool. Not a huge surprise surprise though…
These hosts are a great example that you get what you pay for. Not only in size but also in quality. (cheapest on right side)
is the memory the same as the 105c? as in it stays in the same mode after its on for a couple secs then turned off, or comes back on in the mode you turned it off in after a couple seconds of being off?
Seems to behave as a 105C to me. Memorize a mode after about 2 sec on it that mode.
I take all measurements with a pinch of salt… Even my own!
I advise people to take my measurements with a pinch of salt too.
There are many variables.
I can use three different DMM, different wires, and get quite different results… (borrowed two from my brother)
Low,medium high are quite simular when I compare tailcap readings (slightly lower readings on some DMMs ).
Moonlight. I wont go out with any more numbers, because of the different readings.
I have now used the light/driver more subjectively. Bathroom visit in middle of night. And also a walk out in the dark.
And I can tell that I would have prefer the moonlight to be lower. As a “piss light” (something I dont need or use normally) its a bit too bright in my opinion. If im going to use moonlight indirectly (lighting up behind me). I can just use low indirectly instead. Id rather use low inderectly instead of moonlight directly.
For outdoor use, the difference between low and moonlight is not that much. If someone gave me my light and they had put it on moonlight or low I would not have been able to tell which mode it was in with good certainty. But if I wanted low output I would prefer low over moonlight.
So for my future lights with this driver, I think I will limit the modes to 3 (default). I prefer less modes.
Ill keep this one as it is now though. Ill see if it will grow on me…
Anyone have an answer to djozz’s original question…? Specifying 20mA out seems pretty impossible, without measuring across a shunt, with the ADC onboard the AVR.
My guess is that they adjusted the pwm for an average of 20mA out, using common LEDs etc…
Does anyone have a schematic for this driver (also, for the AK-47 or AK-101)?
