12V circuit protection

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

  1. tuuluser

    Thread Starter New Member

    Nov 20, 2011
    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
    There more simple ways to do this. I know someone can helping us to know yeah?