Maurice Tutor

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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 10 Dec 2017 My Price 5.00

series–shunt feedback

*11.29 In the series–shunt feedback amplifier shown in Fig. P11.29, the devices operate with VBE = 0.7 V and have β1 = β2 = 100. The input signal Vs has a zero dc component. Resistances Rs = 100Ω, R1 = 1 kΩ, R2 = 10 kΩ, and RL = 1 kΩ.

 (a) If the loop gain is large, what do you expect the closed-loop gain to be? Give both an expression and its value.

 (b) Find the dc emitter current in each of Q1 and Q2. Also, find the dc voltage at the emitter of Q2.

(c) Calculate the value of the loop gain Aβ. (Hint: Set Vs =0 and break the loop at the base of Q1. Simplify the circuit

by eliminating dc sources.) (d) Calculate the value ofAf

 

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Maurice Tutor
(5)
Status NEW Posted 10 Dec 2017 08:12 PM My Price 5.00

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