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Thread: Another resistor ?

  1. #1

    Default Another resistor ?

    Luxeon Tri-Rebel Star LED's

    Lumen ratings at 700mA
    Red/Red/White = 90-90-235 Trying to figure out the White FOC resistor I would need. I am still not good at this. I will be using a 7.4v Li-ion 2600mAh 18650 Battery Pack.

    Thanks
    Aven

  2. #2

    Default

    Grab the info on the white Rebel LED from the store page: http://www.thecustomsabershop.com/Lu...Star-P523.aspx

    You have a 7.4v source voltage, 3.1v forward voltage for the LED, and run it at 1000mA. Plug those values into the resistor calculator in my sig and you should have an answer. Remember that wattage is a minimum, you can always use a higher wattage resistor than is listed.
    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!

  3. #3

    Default

    Ok, thank you. I was put off buy the 90-90-235. I want to have a deep red with this one so I need to use my rice to set the mail to 700 mA? For the FOC 4.7 ohm 5 watt resistor from TCSS.

    Luxeon Tri-Rebel Star LED's

    These are designed to work with the 18deg Tri-Rebel Star Lens and MHS "new style" Heat Sink V3

    Each LED is Individually addressed
    Prices Start @ $13.25

    Lumen ratings at 700mA
    Red/Red/White = 90-90-235
    Green/Green/White = 161-161-235
    Blue/Blue/White = 58-58-235
    Royal Blue/Royal Blue/White = 910mw-910mw-235
    Red/Green/Blue = 90-161-58
    Royal Blue/Green/Red = 910mw-161-90

    Red should be ran at a max of 700mA but the other colors are good up to 1000mA

  4. #4

    Default

    If you wired up the two red dice in series, you will set the current to 700mA with the PC. That would be the most efficient way to do it. Wiring them in parallel would require you to give them 1400mA and reduce your runtime.

    Your resistor choice is correct.

    "Deep Red" and "Red" are not the same color LEDs. I don't think TCSS is carrying DR/DR/W Tri-Rebels at this time. The regular Reds are a good shade though. I think you'll be happy with them.
    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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    So (+) from board to (+) on red die 1. (-) from red die 1 to the (+) of red die 2. (-) from red die 2 back to the (-) board?

  6. #6

    Default

    Quote Originally Posted by Avendale View Post
    So (+) from board to (+) on red die 1. (-) from red die 1 to the (+) of red die 2. (-) from red die 2 back to the (-) board?
    Correct. That is how you would wire 2 dice in series.
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  7. #7

    Default

    sweet I am going for a sith look thistime.



    The top saber with red blade and looking for a super sith font. Maybe Vader by Madcow. I cant order the parts yet because I want it powdercoated but have to wait till the 15th.

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