Explore BrainMass

Explore BrainMass

    Working with basic emitter follower

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Derive the expressions for closed-loop gain Avf, input resistance Rif, and output resistance Rof of the following image.

    © BrainMass Inc. brainmass.com March 4, 2021, 5:59 pm ad1c9bdddf
    https://brainmass.com/engineering/electrical-engineering/working-basic-emitter-follower-22100

    Attachments

    Solution Preview

    This is a schematic of the basic emitter follower circuit. Just a transistor and a single resistor from the emitter to ground.

    Writing the voltage equation around the input loop,

    Vi - Vbe - Vo = 0 ---------- 1

    Making Vbe very small or the gain large, we have, Vi =(approx.) = Vo

    The ...

    Solution Summary

    The expert derives the expression for closed-loop gain Avf, input resistance Rif and output resistance Rof for an image. The solution helps with all explanations and mathematical steps.

    $2.49

    ADVERTISEMENT