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Compare two voltages and output difference

Discussion in 'General Electronics Discussion' started by shoebag, Dec 3, 2010.

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  1. shoebag

    shoebag

    1
    0
    Dec 3, 2010
    Hi,

    I know my way round basic circuits, but im not too hot on all the lesser-used components. I was wondering, is there any component that will take 2 input voltages, compare them and then output the difference?

    And if there isn't a dedicated component, could someone please point me to a circuit that would do this?

    Thanks
     
  2. shrtrnd

    shrtrnd

    3,685
    457
    Jan 15, 2010
    Look into 'comparator' integrated circuit chips.
     
  3. Resqueline

    Resqueline

    2,848
    1
    Jul 31, 2009
    Or rather, Google "unity gain differential amplifier". Among 61100 other hits you'll come up with this.
     
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