RATIO's op-amp & resistor ratios

Discussion in 'General Electronics Chat' started by relicmarks, Nov 14, 2008.

  1. relicmarks

    Thread Starter Active Member

    Oct 13, 2006
    355
    0
    I have a problem when looking at a schematic and knowing the RATIOS of the resistors networks around OP-amps to know what the Ratio voltage would be

    Most techs look at the feedback resistor value and input resistor value and do the RATIO's in there head?

    They can tell if the resistor ratios are either 1/4 volt, 1/2 volt, 1 volt , 3/4 volt

    What other RATIO's do you guys come across ? are voltage dividers or current dividers RATIO's?

    When looking at a schematic, where do u find these ratios mostly?

    1.) voltage dividers?
    2.) Feedback resistor value & input resistor value?
    3.) Summing resistor ratios?
    4.) What else please?
     
  2. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
  3. relicmarks

    Thread Starter Active Member

    Oct 13, 2006
    355
    0
    Where else do u find RATIOS in circuit analysis or design

    I just found them in
    1.) voltage dividers or current dividers
    2.) summing mixers
    3.) Op-amp GAIN resistor ratios

    Any others?
     
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