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IDE Drive Switch

Discussion in 'Electronic Basics' started by Jon Wells, Feb 23, 2005.

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  1. Jon Wells

    Jon Wells Guest

    Greetings. I have three IDE ATA hard drives in my computer. I want to be
    able to turn each drive off or on without having to take the cover off the
    computer. So I'd like to install toggle switches on the front of the case.
    Only problem is hard drives have two power rails, 12vdc and 5vdc. Seems
    that most switches are setup to handle just one voltage, not two. What kind
    of switch should I be looking for? Many thanks.
  2. They are called double pole single throw switches. DPST for short. The
    poles are how many separate isolated switches there are, and the throws
    are how many positions you can set the switches to. Thus, you can get
    3P4T switches which contain three separate switches, all controlled by
    the same movement, which can each be set to one of 4 possible connections.

    You may only be able to get double pole double throw (DPDT) switches,
    but they will work too.

    Robert Monsen

    "Your Highness, I have no need of this hypothesis."
    - Pierre Laplace (1749-1827), to Napoleon,
    on why his works on celestial mechanics make no mention of God.
  3. Lord Garth

    Lord Garth Guest

    You shouldn't leave an unpowered drive on the cable. This will be a bigger
    problem than switching the power.
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