Test/review of Led driver 17mm 3A LiIon Fasttech 4594600

These look the same just rotated.

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!

Hey Barkuti

have you receive your driver yet?

I’m curious to know what is the lowest current it can go.

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

thanks Chatika

so the driver can adjust the current for each mode?

5.6mA is true firefly and this is what im looking for :slight_smile:

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.


What does he said? :-D

Err, do you mean that, when switching from high to low, low starts ramping from 0 to your 35mA current setting? How fast?

Cheers :-)

Fast, but it can be seen. Half a second, maybe less. At 60mA, I didnt notice it.

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.

Barkuti, in other threads you said high mode might be bumped up via the jumper - is this the case? Did you try, and if it works - how is it?

Better try this:

All modes are independently adjustable.

Heatsink the driver well.

Cheers :-)

How do I set the Mod I plan to change? By On/off the power source and leaving the driver memorized the mode?

And does the Simon ´s method works on new drivers from Fasttech?

^
You need to chose mode that you want to change. And tap, tap, tap or hoooold.
Yes, its works.

Yeah, definitely !
Thanks!
I didn’t think it would work with the new version.

This seems to be normal.
Mine do this too, even with stock settings.

So, can the current of the high mode be adjusted to values higher than 3 Amperes? Or is 3 Amperes the maximum?

3A is max



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.

I guess i should have tried before, using the advanced post editor makes all the code invisible, so problem solved. :THUMBS-UP:

But i ordered some sub Ohm resistors to slap on top of the R010.

R020 on top should get me 4.5 Amperes. R030 should get me 4 Amperes.

Waiting for them to arrive...