12V circuit protection

Discussion in 'The Projects Forum' started by tuuluser, Dec 6, 2011.

  1. tuuluser

    Thread Starter New Member

    Nov 20, 2011
    23
    0
    Please advise on this circuit. Input is noisy 10-14.4V DC. Output goes to a 5V stepdown using a Simple Switcher IC, and to some relays and switches.

    The LED is supposed to indicate if the PTC is open.

    I don't have much room on the board, but I was hoping this would give some reverse-polarity protection, and protect from surges.
     
  2. T.Jackson

    New Member

    Nov 22, 2011
    328
    14
    There more simple ways to do this. I know someone can helping us to know yeah?
     
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