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Discussion in 'LEDs and Optoelectronics' started by Hetttty, Nov 14, 2012.

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  1. Hetttty

    Hetttty

    2
    0
    Nov 14, 2012
    Hello.

    I was hoping to get some help with a small project I'm working on.

    I need to string together 50 LED's in a parallel circuit.

    The spec on the LED's are as follows: "Forward Voltage: 3.2v - 3.8v. Forward Current: 20mA (typical), 30mA (max)".

    As I'm not particularly technical, I'd really appreciate it if some kind soul could give me some indication of how much power I'd need to run my circuit.

    Many thanks in advance.
     
  2. wingnut

    wingnut

    242
    9
    Aug 9, 2012
    Hi

    There is a LED calculator at this site

    http://ledcalculator.net/

    The usual way of calculating power is volts times amps equals watts.
     
    Last edited: Nov 14, 2012
  3. CocaCola

    CocaCola

    3,635
    5
    Apr 7, 2012
    About 3.5 Watts (3.5V @ 20mA x 50)
     
  4. Hetttty

    Hetttty

    2
    0
    Nov 14, 2012
    Thanks all! Much appreciated!
     
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