Battery holder led and resistor, weird!??

[wolf69]

Hello,

I recently received my empty hilts from US, i wanted to intall the electronics by myself so i asked for dissamble hilts.

My battery holder is like this with the resistor apparently solder to the negative, is that normal!?

[Forgetful Jedi Knight]

Hello,

I recently received my empty hilts from US, i wanted to intall the electronics by myself so i asked for dissamble hilts.

My battery holder is like this with the resistor apparently solder to the negative, is that normal!?

For them, sadly yes. It technically doesn't matter which side the resistor is on (unless otherwise specified), though the "normal" practice is for it to be on the (+) side.

[Silver Serpent]

You can attach a standard resistor to either the negative or positive lead. Either is fine.

The only one that matters is the DynaOhm resistor for accent LEDs. That one needs to go on the positive lead.

[wolf69]

Thank you both for you fast reply!

I have wire my tri cree GGG in serie with 4 AAA batteries 6V.
The resistor is 3W 2ohms.

I m not really happy with the brightness and the light if not even among the blade, do you have any advice?

[Forgetful Jedi Knight]

Thank you both for you fast reply!

I have wire my tri cree GGG in serie with 4 AAA batteries 6V.
The resistor is 3W 2ohms.

I m not really happy with the brightness and the light if not even among the blade, do you have any advice?

Yes, 3 AAA's is nowhere near enough to run three dice. Run one at 1A (and you can figure out the new resistor you need for the battery solution you currently have) and that should be brighter than what you have now.

The other advice, is use a 3.7V Li-Ion battery instead, and wire your LEDs in parallel and resistor appropriately.

[wolf69]

Forgive my ignorance but how come that a li ion 3,7V is better than 4x AAA 1,5v (6V total)?


After reading more stuff i have be to the conclusion that powering 3 GGG is "impossible":
One green requires 3,8V to be at 1A.
So if i m in series i would need a batterie pack of 3A
If i m in parallel i will need 3,8v X 3
Right?

So either a 4 AAA or 2 li ion wont be enough?

Please correct me if im wrong

[darth_chasm]

Disregard original note.

Where did you get 3.8v from for the Green leds? I thought the crees were 3.58v

[wolf69]

Here:
http://www.cree.com/~/media/Files/Cr...g/XLampXPE.pdf

But either way the voltage is still too high for my battery solution

[darth_chasm]

The tri Crees sold in the store are xp e2 with the greens rated 3.58v @ 1000 mA, which is NOT too high for a 3.7v battery.

You linked to an xp e. Did you get your led from somewhere else?

[wolf69]

Ok i didnt see the difference E2 and E you may be right
But my question is about a tri xp-e(2?) green so 3 x 3.58v