Alarm Contact


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  1. #5
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    I think this is what BigWumpus meant. But the tolerances are a bit tighter than the 0.3 and 0.7 times VDD. Catches more hackers. And still leaves room for 5% (or worse) resistors.


    And, it's better to take a Reading when the system is Initialized, and use an even tighter tolerance from that reference point to determine if a TAMPER has occured.
    <br>
    Last edited by Darrel Taylor; - 13th October 2005 at 07:33.
    DT

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