Explanation Given: The given circuits are shown below. Calculation: Consider (a) part of the above figure. After breaking the loop the expression for the Thevenin voltage V T H of the circuit is calculated as, V T H = 10 V ( 51 k Ω 51 k Ω + 5.5 k Ω ) = 0.937 V The value of the parallel combination of the resistance R 1 and R 2 is calculated as, R R 1 | | R 2 = ( 51 k Ω ) ( 5.5 k Ω ) ( 51 k Ω ) + ( 5.5 k Ω ) = 4.965 k Ω The expression to determine the Q point of the base current of the circuit is calculated as, I B Q = V T H − V B E ( on ) R R 1 | | R 2 + ( h f e + 1 ) R E Substitute 0.973 V for V T H , 0.7 V for V B E ( o n ) , 4.965 k Ω for R R 1 | | R 2 , 120 for h f e and 1 k Ω for R E in the above equation. I B Q = 0.973 V − 0.7 V 4.965 k Ω + ( 120 + 1 ) 1 k Ω = 0.00217 mA The expression to determine the collector quiescent current is given by, I C Q = h f e I B Q Substitute 0

Microelectronics: Circuit Analysis and Design

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ISBN: 9780073380643

Author: Donald A. Neamen

Publisher: McGraw-Hill Companies, The

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Chapter 12, Problem 12.16EP

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The loop gain from the p spice analysis.

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Chapter 12, Problem 12.15EP

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Chapter 12 Solutions

Microelectronics: Circuit Analysis and Design

Ch. 12 - (a) The open-loop gain of an amplifier is A=5104...Ch. 12 - (a) Consider a general feedback system with...Ch. 12 - (a) A feedback amplifier has an open-loop...Ch. 12 - (a) Consider the circuit shown in Figure...Ch. 12 - (a) The closed-loop gain of a feedback amplifier...Ch. 12 - The gain factors in a feedback system are A=5105...Ch. 12 - Prob. 12.3TYU Ch. 12 - An ideal series-shunt feedback amplifier is shown...Ch. 12 - Consider the ideal shunt-series feedback amplifier...Ch. 12 - An ideal series-series feedback amplifier is shown...

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The loop gain from the p spice analysis.

Solution Summary: The author explains the value of the loop gain from the PSPICE analysis, which is 2.572.

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