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Thread: Relay Question

  1. #1
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    Relay Question

    Hello,

    I am currently trying to mentally design a supplementary alarm system for my computer.

    The basic idea involves a 12V piezo siren, that is controlled by 2 relays in series: one that closes the switch (and completes the ciruit) when a kill switch is in the 'on' position, the other completes the siren circuit when another circuit is broken (ie when some c**t is tryingto nick my computer).

    I hope that made vague sense.

    My question is what type of relays do i want to use for this circuit, i had a look at rs components but their selection baffled me.

    Cheers for your help

  2. #2
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    automobile/bosch type relay. Most autopart place have them. Better yet, there are a lot at junk yard and very cheap.
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