(a) Explanation Calculation: The given diagram is shown in Figure 1. The input transistor is biased in the inverse reverse as the input voltage is 3.6 V . The expression for the voltage v B 1 is given by, v B 1 = V B E ( sat ) Q O + V B E ( sat ) Q 2 + V B C ( on ) Q 1 Substitute 0.8 V for V B E ( sat ) Q O , 0.8 V for V B E ( sat ) Q 2 and 0.7 V for V B C ( on ) Q 1 in the above equation. v B 1 = 0.8 V + 0.8 V + 0.7 V = 2 .3 V The expression for the collector voltage v C 2 is given by, v C 2 = V B E ( sat ) Q O + V C E ( sat ) Q 2 Substitute 0.8 V for V B E ( sat ) Q O and 0.1 V for V C E ( sat ) Q 2 in the above equation. v C 2 = 0.8 V + 0.1 V = 0.9 V The expression for the current i 1 is given by, i 1 = 5 V − v B 1 12 k Ω Substitute 0.9 V for v C 2 in the above equation. i 1 = 5 V − 0.9 V 12 k Ω = 0.225 mA The expression for the current i B 1 is given by, i B 1 = i 1 Substitute 0.225 mA for i 1 in the above equation. i B 1 = 0.225 mA The expression for the current i B 2 is given by, i B 2 = ( 1 + 2 β R ) i 1 Substitute 0.1 for β R and 0.225 mA for i 1 in the above equation. i B 2 = ( 1 + 2 ( 0.1 ) ) ( 0.225 mA ) = 0.27 mA The expression for the current i C 1 is given by, | i C 1 | = i B 2 Substitute 0.27 mA for i B 2 in the above equation. | i C 1 | = 0.27 mA The expression for the current i 2 is given by, i 2 = 5 V − v C 2 4 k Ω Substitute 0 (b) To determine The value of the fan-out when maximum collector current.

MICROELECT. CIRCUIT ANALYSIS&DESIGN (LL)

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ISBN: 9781266368622

Author: NEAMEN

Publisher: MCG

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Chapter 17, Problem 17.10EP

(a)

To determine

The fan-out for the given input voltage vX and vY .

(b)

To determine

The value of the fan-out when maximum collector current.

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MICROELECT. CIRCUIT ANALYSIS&DESIGN (LL)

Ch. 17 - Consider the differential amplifier circuit in...Ch. 17 - Prob. 17.2EP Ch. 17 - The reference circuit in Figure 17.5 is to be...Ch. 17 - Assume the maximum currents in Q3 and Q4 of the...Ch. 17 - Prob. 17.5EP Ch. 17 - Prob. 17.6EP Ch. 17 - Prob. 17.1TYU Ch. 17 - Prob. 17.2TYU Ch. 17 - Prob. 17.7EP Ch. 17 - Prob. 17.3TYU

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