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Bjt differential amps

Discussion in 'Electronics Homework Help' started by Andetroy, Sep 8, 2013.

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  1. Andetroy


    Sep 8, 2013
    I've bn reading on bjt differential amplifiers and i stumbled on the term "transconductance" i believe it's the ratio of the amperage to the voltage. My question is: what exactly does it mean in bjt diff amps? How is it calculated for an active loaded bjt diff amp with emitter degeneration resistors?
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    It is the ratio of change in output current to change in input voltage.

    See here.
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