Rebel, LedEngin Forward Voltages/Amperages (For Resistor Calculations)

These are NOT manufacturers rated settings. These were tested with a multimeter off of a 7.4 Li-Ion 18650 pack using LEDs from TCSS.

Rebel Royal Blue 875mW @700mA

1500mA = 3.46V
1200mA = 3.38V
1000mA = 3.30V
700mA = 3.25V
350mA = 3.05V

Rebel Blue 58lm @ 700mA
1500mA = 3.80V
1200mA = 3.70V
1000mA = 3.58V
700mA = 3.40V
350mA = 3.00V

LEDEngin 5W Deep Red
1500mA = 2.84V
1200mA = 2.70V
1000mA = 2.60V
700mA = 2.38V
350mA = 2.04V

Rebel White 320lm @ 1000mA

1500mA = 3.28V
1200mA = 3.20V
1000mA = 3.15V
700mA = 3.07V
350mA = 2.79V

Rebel Green 166lm @ 700mA

1500mA = 3.50V
1200mA = 3.35V
1000mA = 3.28V
700mA = 3.15V
350mA = 2.9V

Rebel Cyan Bin 1 120lm @ 700mA
1500mA = 3.75V
1200mA = 3.60V
1000mA = 3.50V
700mA = 3.35V
350mA = 3.10V

Rebel Deep Red 720mW @ 700mA

1500mA = 2.70V
1200mA = 2.56V
1000mA = 2.48V
700mA = 2.32V
350mA = 1.99V

Rebel Amber
1500mA = 3.25V
1200mA = 3.18V
1000mA = 3.12V
700mA = 3.00V
350mA = 2.75V

LEDEngin RGBW 10W

Red
1500mA = 3.15V
1200mA = 2.91V
1000mA = 2.75V
700mA = 2.48V
350mA = 2.12V

Green
1500mA = 5.00V
1200mA = 4.67V
1000mA = 4.45V
700mA = 4.00V
350mA = 3.37V

Blue
1500mA = 3.90V
1200mA = 3.70V
1000mA = 3.55V
700mA = 3.33V
350mA = 3.00V

White
1500mA = 3.84V
1200mA = 3.67V
1000mA = 3.55V
700mA = 3.35V
350mA = 2.98V

Deep Purple (5 ohms on red, 0 ohms on Blue (after resistor calculation))
1500mA = 3.80V
1200mA = 3.60V
1000mA = 3.45V
700mA = 3.20V
350mA = 2.70V

Viridian Green (5 ohms on white, 0 ohms on green (after resistor calculation))
1500mA = 4.70V
1200mA = 4.40V
1000mA = 4.17V
700mA = 3.80V
350mA = 3.25V

Hot Pink (5 ohms on Blue, 0 ohms on red (after resistor calculation))
1500mA = 3.15V
1200mA = 2.92V
1000mA = 2.77V
700mA = 2.50V
350mA = Not Possible, shows up red.

LEDEngin RGBA 10W

Red
1500mA = 3.05V
1200mA = 2.81V
1000mA = 2.70V
700mA = 2.40V
350mA = 2.10V


Green
1500mA = 5.40V
1200mA = 5.05V
1000mA = 4.85V
700mA = 4.35V
350mA = 3.70V

Blue
1500mA = 4.00V
1200mA = 3.80V
1000mA = 3.68V
700mA = 3.40V
350mA = 3.00V

Amber
1500mA = 2.90V
1200mA = 2.70V
1000mA = 2.58V
700mA = 2.32V
350mA = 2.05V

Deep Purple (5 ohms on red, 0 ohms on Blue (after resistor calculation))
1500mA = 3.90v
1200mA = 3.70v
1000mA = 3.55V
700mA = 3.30V
350mA = 2.75V

Hot Pink (5 ohms on Blue, 0 ohms on red (after resistor calculation))
1500mA = 3.05V
1200mA = 2.80V
1000mA = 2.65V
700mA = 2.45V
350mA = Not Possible, shows up red.

-- Could I have this Stickied please? Since people will use these?

Updated with Ledengin 5w Deep Red. Please rename this thread to "Lightsaber LED Forward Voltages and Amperage List (for Resistor Calculations)"

Btw, anyone with statistics on other LEDs, please send them my way and ill put them in this thread on the first post.

Bump for addition of rebel deep red and rebel white. As well as reminding the mods that this requires a rename to: "Lightsaber LED Forward Voltages and Amperage List (for Resistor Calculations)"

Updated with LEDEngin 10W RGB Leds.

Can I have the subject of this post changed to: "Rebel, LedEngin Forward Voltages/Amperages (For Resistor Calculations)"

As well, can I please have this stickied?

HI there,

I have an RGBW that I want to resistor to cyan, and am a little fuzzy on how to accomplish this. I have tried both series and parallel wiring, and when I add extra resistance to either the B ro G dies I do not get any difference in color.

For my test I am adding a resistor to the "+" lead of the die, and then using that resistor to connect to the one needed to actually run the LED. Is this correct, or is the color resistor supposed to go somewhere else in the chain.

Its possible that I am just using the wrong value (which is why I am in the column but unfortunately no cyan here) so I am hoping someone here can point me in the right direction with a rough figure for my setup (w/7.4v pack)

Also, do I need to use a series setup for this configuration? The parallelled LEDS are much brighter by comparison...

As always, thanks everyone for your help

Are you using a sound board, or is this a straight up stunt saber?

Thanks for responding Jay I always appreciate your input.

I am doing a static test at the moment, but plan on connectiing this to a PC 2.0 board or possibly my igniter R2 (although that one I can just change the color in the config file so no big deal there)

Tx!
174fps

You'd need to have the board first. There's a lot of variable's, so you'd need your final setup before a final solution could be used.

Okay, well right now I have a parallelled setup with B+G connected to a PC 2.0. I tried putting a pot on the blue die today with the hopes it would affect the color and then I could meter the pot, but all it does is dim the brightness, no color change.

Thanks all!
174fps

Update...

So I hooked up the unit to my PC this evening and was indeed able to get a color difference with a 10 ohm resistor on a parallelled G+B setup. There seems to be pretty bad color separation though. I tried 2, 5 and 15 ohm resistor values and 10 ohm seems to be best color wise. I tried the same setup but with the two die serialled, and there was a considerable brightness decrease, and got the same color separation, so I promptly returned to parallel.

I may just stay with sky blue, it actually is a lot nicer than I expected.

cheers!
174fps