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Question re. Operational Amplifiers

Discussion in 'Electronic Basics' started by [email protected], May 5, 2009.

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  1. Guest

    Greetings,

    I'm really useless at analog circuitry, so any help is appreciated.

    I have:

    input P0 != GND
    input P >= P0
    constant A < 1

    I would like:

    output P* = A (P - P0) + P0

    Can and should I use an op-amp for this, or is that overkill?

    I know if P0 = GND, then I can just use a resistor to "multiply" by A,
    but no such luck.

    Thank you for reading.

    Regards,

    YR
     
  2. Guest

    Thank you. It is much easier than I expected. /YR
     
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