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pcb power ground problem.

Discussion in 'PCB Layout, Design and Manufacture' started by qweets, Dec 21, 2013.

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  1. qweets


    Sep 26, 2010
    hello there.

    I have a problem with my design.

    I have an audio design placed together with an led system which is controlled by a micro controller.They both share the same Power supply which is causing problems i beleive.

    The audio system sounds great by itself, that is until i conect up the micro controller and light up a few leds.Then there is a terrible interference noise and pulse sound.

    I wonder do i need two seperate ground planes and to somhow use diodes to seperate the audio system power from the micro controller power?

    Here is a schematic to help explain the system.

    Your help is greatly appreciated. : )
    Last edited: Dec 21, 2013
  2. qweets


    Sep 26, 2010
    I believe it is solved, the PSU was not powerful enough or failing . i changed the PSU and so far it is working. pheew : )
  3. davenn

    davenn Moderator

    Sep 5, 2009
    well done :)

    always a logical reason

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