Let's see if I understand how current can be set for a given mode. Initial conditions:
Driver has an attached load (emitter).
A way to determine emitter current is set up.
Driver is powered with a voltage source beefy enough to overcome all burdens.
Driver has adequate cooling.
Driver mode to adjust is selected.
Then, when connecting the adjustment wire to ground driver will alternatively increase or decrease current until adjustment wire is ungrounded or some limit is reached. Is this right?
A really detailed explanation would be great!
I do not know how far you can reduce the current but i see a sens resistor. And usually playing with it, in or decreases the current. Could be a last resort if the programming is not enough.
I increased the current on my TN31 (K40m driver installed) a long time ago by switching the sense resistor from 100 or 82mOhm original to 50mOhm. And when i turned it on for the first time i was thinking : it’s alive it’s alive. Huge difference!
I have 2 drivers. I think it’s highly depends on used led battery.
1,49mA with Jaxman LG led and Sanyo NCR18650GA
4,6mA with LH351D and Panasonic NCR18650B
Little mistake, already edited. Its 4,6mA, not 5,6.
Yes, each mode can be changed. Just select the mode in which you want to change the brightness and taptaptap (I recommend doing single/slowly taps) to reduce the current and hold for increase.
I noticed something strange. I have reduced the current of the lowest mode to about 35mA. After switching from Hi> Lo, Low it ramping from 0. It doesn’t work when turning on at lowest mode.
Adjusted low mode to 100 mA and sometimes I see ramping too. Also my driver had strange modes by default: med 1.1A, high 2.2A. However, “set point” works as expected and all modes adjustable.
3A is probably the maximum by design, to avoid onboard stuff burning out. But cooling can be improved, so time to stack additional sense resistors atop the stock R010. Each R050 will allow extra +600mA, so up to 4.8A with 3x additional R050 sense resistors. I advice to install some tiny copper heatsink over the AON7520 MOSFET in such a case.
Cheers ^:)
P.S.: tried to use de simple post editor, Jerommel, but couldn't. The advanced one is WYSIWYG.