DRY Driver Questions

Flashlight Modding and DIY Parts
1

Hi guys

I've got a couple of questions regarding the DRY driver (LMHT) and are hoping someone can shed some light onto the topic :D

http://www.cnqualitygoods.com/goods.php?id=1349

Questions:

- The modes are specified as 0.1A, 0.5A, 2.25A and DD. Are the LMH modes regulated? Or are they limited like on the 105C and other 7135 based boards?

- If the current is regulated, is it possible to change the sensing resistor for higher LMH values?

- If the current is limited by 7135 chips or similar, is there a way to increase the LMH values?

- Is there an upper limit on the current in DD? What is the maximum the driver can handle?

- Does the driver act as a buck converter, or does it require the output voltage to be similar to the input voltage?

- Will the driver work with 1 x XML and 1-2 x 18650?

Thanx guys

2

I can say that I like the levels/modes on this driver but I get a slightly audible hum/whine in every mode. I have tried everything to stop this, including adding ground leads, changing out switches, etc. It is a great value and driver if you can deal with the noise.

3

I'm pretty sure there are some threads on that... I forgot a couple of details, but according to my memories all modes are direct drive, but modulated by PWM. The current mainly depends on the battery, and there's no resistor modding.

4

Thanx guys. I'm planning to do a MT-G2 build with 2 x 18650's and use the DRY driver with this build, as it would give me a nice usable 2.25A in high, and 7-9A on DD. I just wanted to know if there's a way to get a medium of say 2A, high of 4A and DD of 7-9A.

5

2.25A is still a whole bunch of light from a MTG2. I think the as-is mode spacing sounds about right.

6

I agree. Visually, the spacing is pretty nice.

7

What code is printed on top of the original transistor installed on the DRY driver?

Is there a better transistor to replace the original ?