led light

Discussion in 'The Projects Forum' started by led freak, May 2, 2009.

  1. led freak

    Thread Starter New Member

    May 2, 2009
    1
    0
    i m thinking of doing a circuit with ten white leds which are connected in series...i hav searched for the circuit diagram but i dint find...could any1 please give me a circuit diagram which u hav tried and u are getting the output....
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    Do you have a voltage source in mind? How many volts is it?

    hgmjr
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,641
    2,344
    Hello,

    To have ten white leds burning you must have a powersupply.
    What voltage does your powersupply have?
    What type of white leds are you going to use (datasheet)?

    Greetings,
    Bertus
     
  4. Wendy

    Moderator

    Mar 24, 2008
    20,764
    2,534
    Have you read this?

    LEDs, 555s, Flashers, and Light Chasers

    LEDs vary in voltage, even within the same family. Figure white LEDs are a max of 3.8V Vf each, that means you would needs 38V at least to power them, and more voltage would actually be necessary.

    You would be better to have 5 in series with 2 legs, with would still work to a minimum power supply voltage of 19V.

    The article I pointed to explain this and more.
     
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