Basics of differential amplifier

brittoo

brittoo

@brittoo-7V5dPT • Oct 21, 2024
Hi

In a single ended double output diff amp, one of the i/ps is grounded. Can somebody tell me how the Ic flows through the transistor when the base is at zero voltage?

Regards
Brittoo
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  • shreyasm89

    shreyasm89

    @shreyasm89-jGobVm • Sep 27, 2010

    Beautiful question!..😀...For this i think you will have to consider the internal circuit diagram of a npn transistor.Here since the base-emitter jn. is actually forward biased,the emitter being connected to -ve potential. So when the Ic(conventinal) flows in from the collector there is and additional atraction from the more -ve potential at emitter. This gives rise to current Ie which will flow throught he swamping resistor Re.
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  • martin12

    martin12

    @martin12-f28URR • Sep 29, 2010

    Hello,
    One of the more interesting aspects of an operational amplifier is that it can be used to perform mathematical operations electronically. Properly connected, an operational amplifier can add, subtract, multiply, divide, and even perform the calculus operations of integration and differentiation. These amplifiers were originally used in a type of computer known as the "analog computer" but are now usedin many electronic applications.
    thanks!

    <Donot put links -ES>
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