Connect with us

LEDS in parallel circuit help

Discussion in 'LEDs and Optoelectronics' started by Crakkers, Feb 2, 2017.

  1. Crakkers

    Crakkers

    5
    0
    Jan 26, 2017
    Hi For a school based tech project I need to wire 17 x 3mm colour changing leds (from rapid electronics) together in parallel.

    I want to power the circuit with a plug type psu.

    I intend to simply wire the legs together via fly leads, unless there is a more efficient way - i am making my own fairly lights, sort of thing.

    What voltage PSU can you recommend, I am thinking 9V?

    Will I need a resistor to protect the leds? If so, what size and will I need one for each led?

    THANKS

    c.
     
  2. Crakkers

    Crakkers

    5
    0
    Jan 26, 2017
    Thanks, but that means nothing to me.
     
  3. davenn

    davenn Moderator

    13,326
    1,769
    Sep 5, 2009
    give a link for these LED's so we know what you are talking about

    see my previous comment
     
  4. Crakkers

    Crakkers

    5
    0
    Jan 26, 2017
  5. Audioguru

    Audioguru

    2,618
    593
    Sep 24, 2016
    The LEDs you have are not ordinary LEDs as shown by Sundy. They operate the built-in circuit from typically 4.5V or 5V max. They say if the power supply is more than 5V then a series current-limiting resistor is needed to limit the current to 20mA.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-