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Thread: How much voltage is required for these lights?

  1. #1
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    How much voltage is required for these lights?

    http://www.allelectronics.com/cgi-bi...-10&type=store

    about how much power is required for the light in the picture above... I am not sure weather or not i can hook it strait up to my computers +5v or +12v.... how would i go about hooking these to my computers psu... I have 12 total to light up... would i need to put a resister on the positive line before it gets to the lights... or what? im sorta confused there was no spec with these... they are really tiny about 2mm square(excluding the metal bars coming out). thanks
    Anything worth doing, is worth doing right.
    http://www.mp3car.com/vbulletin/showthread.php?s=&threadid=15017

  2. #2
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    DO NOT wire them directly to the supply or you will get a spectacular explosion! To run them on 12v use a 470 Ohm resistor, or you could wire 6 in series and run it without a resistor. Then you could wire another 6 in series and run them in parallel to the others.
    Best regards,
    Matthew

  3. #3
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    Unhappy

    All 6 Lights lit up then burt out...... they are red too ... heh... damn... so the wiring it without a resister idea deffinately dont work... but if i get that 470ohm one... all i have to do is wire 1 light to each 470 oh resister right? Kinda sucks though cause the 6 in a series thing woulda been cool.
    Anything worth doing, is worth doing right.
    http://www.mp3car.com/vbulletin/showthread.php?s=&threadid=15017

  4. #4
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    I would have expected them to work in series, although it seems the current was too much. Anyway yes you can use a 470 Ohm resistor on each LED, or you should be able to have a 100 Ohm 1 watt resistor to work all 12 LED's. Perhaps a little lower would be good, but certainly no lower than 50 Ohms. You can experiment but be careful. I haven't tested the single resistor idea but it should work, as long as you have all 12 LED's wired in.
    Best regards,
    Matthew

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