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Thread: NB and Seoul P4 green Resistor?

  1. #1

    Default NB and Seoul P4 green Resistor?

    Anyone know the correct Resistor for Seoul P4 Green and the NB, I have done the math and get one I can't find and one I'm not sure about, Sorry for the noob question...

    I am running a 6v 4AA battery pack, but I might just change my config to a 18650 Li-ion for 3.7 v and call it a day. Please help

  2. #2
    Youngling Jordandau's Avatar
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    You'll have to pick a power source first, but for 6V your forward V is 3.25 so you'd need a 3.3 ohm 5 watt, and for the 3.7V cell you'd need 1 ohm 2 watt. All of this info is also in the store right here

    http://www.thecustomsabershop.com/wi...er/wiring.aspx

    Just click the tab for resistor chart and fill in the info.

  3. #3

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    The NB can only support up to 5.5v, so you would need to use either NiMH rechargables (4x 1.2v) or a single 3.7v li-ion.

    According to the store, the P4 green uses a max Vf of 4.1 @ 1000 mA, but I do see that other link showing 3.25v... so I'll leave resistor recommendations for someone else who is familiar with the P4s.

  4. #4

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    From the P4 data sheet, the typical forward voltage rating on that LED is 3.25v, with a maximum of 4.1v. I'd base my calculations on the 3.25v value. Plug it into the resistor calculator in my sig, and it'll give you an appropriate value.

    Or you could just read what Jordanau wrote.

    And TrypWyr is correct. 6v is too much for the NB. 4x NiMH, 3x alkaline, or 1x Li-Ion is what you want to use.
    We all have to start somewhere. The journey is all the more impressive by our humble beginnings.

    http://led.linear1.org/1led.wiz for the lazy man's resistor calculator!
    http://forums.thecustomsabershop.com...e-to-Ohm-s-Law for getting resistor values the right way!

  5. #5

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    Thank you guys, appreciate it

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