Getting rid of noise of car battery/alternator

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  1. - 6th March 2008, 13:59 #2
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    passion1
    passion1 is offline Junior Member
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    In another thread the attached schematic was suggested to monitor voltage of a car battery.
    Am I right in saying that, If I am not monitoring the voltage but merely wants to run my pic from the battery,
    then I only need the portion included in the red box?
    What would be appropriate components/values for Z1, D1, D2?
    For Z1, what is best, a 18V transorb or a zener?
    For D1, D2, is a 1n4007 good enough?

    Thanking you in anticipation!
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    Last edited by passion1; - 6th March 2008 at 14:35.
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