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  1. - 29th April 2006, 10:03 #8
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    Acetronics2
    Acetronics2 is offline Fanatical Contributor
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    Wink Quiet supplies ... ahhhhh !!!!

    Hi, Leonel

    One simple solution is to bring the 5 v to the PIC ( only the PIC ...) through a diode ( Low drop Schottky if required ) and havind a BIG capacitor ( say 470 - 1000µF ) connected to the Cathode. This doesn't keep you from having the usual 10µF and .1µF decoupling caps.

    This will filter spikes, and allow powering the PIC if supply voltage falls too low.

    This also permits to shut down all peripheral components BEFORE the Pic goes to bed ... always having known peripheral states at power off.

    Alain

    Hi, Mel

    When you design an Electronic Ignition or a High Voltage device from a battery , you DO NOT have the choice for a "nice and clean" supply !!! ...
    Last edited by Acetronics2; - 29th April 2006 at 10:10.
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