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how can i build a voltage reverse gate?

Discussion in 'General Electronics Discussion' started by hannibal636, Sep 7, 2012.

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  1. hannibal636


    Sep 7, 2012
    im just trying to make a device, something that let say in a 12vdc circuit, the device would allow 12v to pass when 0v is applied, and 0v to pass when 12v is applied...

    also works in between.. like at 2v, it would allow 10volts, at 3v allows 9v, etc..
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    Nov 17, 2011
  3. hannibal636


    Sep 7, 2012
    ok, thanks! yea, i think thats what i want, so u are actually talking about difference amplifer...
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