6v & 12v - Led & MCPCB- How to tell the difference?

Flashlight Modding and DIY Parts
1

Just wondering, how do you tell the difference when looking at a 6v or 12v mcpcb in a light? Is there a visual difference?

I have a DMM, but barely know how to use it. Can I use it to determine the difference?

Also, are 6v leds different than 12v leds? Or is it just a different mcpcb?

2

50.2s and 70.2s? Just a different mcpcb. The 12v one has pads in series and the 6v one is in parallel

3

Thank you! Yes 50.2 and 70.2, also xhp35?

4

6V copper mcpcb XHP 70.2 led.


.
12V c opper mcpcb XHP 70.2 led.

6v to 12v conversion.

.
It is hard to see the difference with the flashlight assembled. :wink:
.

5

Well I knew I needed to take the reflector out lol , but I have a s21b with xhp50 5000k, which I know isn’t 3v, but looking at the mcpcb it looks just like my 3v mcpcb…

6

Measure with multimeter?

7

Thank you for the pictures cncman!

8

CNCman - I understand the difference between 6volt and 12volt mcpcb's much better now :))

I have a question, i need a 32mm 12volt MCPCB for a xhp50. MtnE has 6volt versions of this, and you shared here converted it to 12volt, but i dont think i understand exactly what you did. Could you explain where you cut? and how you add the jumper? thank you!

9

Attention anyone who knows? I see CNCman has not been around for a couple of months

Maybe you could show me here. I took screen shot of the MtnE Maxtoch "as is" next to your photo.

Do i cut through the center pad? or just the + / - pads, and how to i connect the jumper / break the surface sticker for contact to solder?

10

Just the + and - pads.
Scratch the soldermask to expose the copper, you don’t need to use somthing as big for the jumper, just a simple wire will do.

Edit : the two PCBs are not the same, the copper zones on his PCB are much larger given where the jumper is soldered. On yours the jumper will have to be closer to the LED, if that’s a problem for the reflector then you can use a thin copper sheet for the jumper, covered with kapton.

11

Thank you So Much, thefreeman! I understand what you are saying. And yes, i see now that they are not the same PCB as each other. Thank you for the help!