Sense resistor mod to KD Super Output P7 Driver

Flashlight Modding and DIY Parts
4

Agreed, will change it for future reference

5

Nice mod Alex. I have this driver. Were your measurements from the tailcap or at the emitter? Also, have you ever experienced the thermal cut-off feature this driver was noted for? What about low voltage warning?

6

I’ve used this driver for a few different mods, 2 bike lights and one handheld. 7x nimh for the bike lights and 6x nimh for the handheld. Both features functioned as described in Kd’s specs. A different blink for each and shift to low mode. I think lowV is two blinks and over temp is 3 blinks.

7

Current Measurements at tailcap

8

I can see me trying this, I have a couple of these drivers and like them a lot, boosting the current output is very pleasing to me.

9

Ok, I see this being used in an upcoming build, it seems 4.5a drivers are few and far between.

Just need to track down some R120 smd resistors now because a pot won’t work here :expressionless:

10

Fasttech carries smd resistors:

http://www.fasttech.com/category/1002/resistors/?smd%20resistors

http://www.fasttech.com/category/1002/resistors

http://www.fasttech.com/products/1002/10003143/1234403-0805-012r-smd-precision-resistors-100-piece

11

Cheers flow, just what I needed buddy 8)

12

Does anyone know if fitting another R120 resistor will increase the output current further?

13

I forget what resistors I added to mine, but it pulls ~3 amps at the tail

14

Adding another R120 will lower the total sense resistance, and very likely increase the output current, but the driver may or may not be able to handle it.

Edit: Has KD missed a decimal place? This thing cannot possibly cost $43.99.

15

That is for 5 pcs

16

Thanks. Didn’t notice that… :8)

17

Lightmalls has a better price.

18

Wow thanks for showing that, of all the high output drivers I have used that one has been the least troublesome.

Now I can get it cheap……

19

Thanks bdiddle, at least I know 3A at the tail is possible.

20

Anybody try this driver with an mt-g2 off 2 cells?

21

Is that the driver that Match used his 4M mod?

http://budgetlightforum.com/comment/reply/16168?quote=1#comment-form

22

I think so.

23

Bump, anyone get emitter current after the sense resistor mod and is the driver still working?