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For the circuit in Figure 1, the transistor has the following parameters: k=2 mA/V², Vr=-2V, ra=ro = 0 Based on the circuit, a. Prove that Ino = 0.44 mA and VasQ =-2.47 V b. Draw the ac equivalent circuit at mid-frequency. c. Determine the input and output impedances, Zi and Zo.

For the circuit in Figure 1, the transistor has the following parameters: k=2 mA/V², Vr=-2V, ra=ro = 0 Based on the circuit, a. Prove that Ino = 0.44 mA and VasQ =-2.47 V b. Draw the ac equivalent circuit at mid-frequency. c. Determine the input and output impedances, Zi and Zo.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Question 1 For the circuit in Figure 1, the transistor has the following parameters: k = 2 mA/V², Vr = -2V, ra=ro = 0 Based on the circuit, a. Prove that InQ = 0.44 mA and Vesq = -2.47 V b. Draw the ac equivalent circuit at mid-frequency. c. Determine the input and output impedances, Zi and Zo. +10V 180 kn * 10 kN Rs R2 160 kn C2 RL 10 kn Rig = 2 kn Vsig R3 150 k -10V Figure 1
Transcribed Image Text:Question 1 For the circuit in Figure 1, the transistor has the following parameters: k = 2 mA/V², Vr = -2V, ra=ro = 0 Based on the circuit, a. Prove that InQ = 0.44 mA and Vesq = -2.47 V b. Draw the ac equivalent circuit at mid-frequency. c. Determine the input and output impedances, Zi and Zo. +10V 180 kn * 10 kN Rs R2 160 kn C2 RL 10 kn Rig = 2 kn Vsig R3 150 k -10V Figure 1
Consider an enhancement MOSFET common source amplifier circuit in Figure 2. The output characteristic is showed in Figure 3. Assume that the circuit is operating in the saturation region and k = 5 mA/V2. It also given that ra = ro = 0, Cgd = 2 pF, Cgs = 4 pF, Cás = 1 pF, Cwi = 4 pF and Cwo = 3pF. 10 V Ro 100 2 6 MO R$ 1002 R 5002 Vo R$ Vo 14 MO 100 2 Cs Figure 2 60 50- 30- 20- 10 0 1 2 3 4 5 1 8 9 10 Figure 3 a. Using DC load line, prove that Inq = 22.5 mA and Vpso = 5.5 V for Vaso = 2.5V. b. Draw the AC equivalent circuit at mid frequency. c. Estimate the voltage gain Av = Vo /Ni. d. Determine the dominant high cut – off frequency for the circuit. (yu) 4
Transcribed Image Text:Consider an enhancement MOSFET common source amplifier circuit in Figure 2. The output characteristic is showed in Figure 3. Assume that the circuit is operating in the saturation region and k = 5 mA/V2. It also given that ra = ro = 0, Cgd = 2 pF, Cgs = 4 pF, Cás = 1 pF, Cwi = 4 pF and Cwo = 3pF. 10 V Ro 100 2 6 MO R$ 1002 R 5002 Vo R$ Vo 14 MO 100 2 Cs Figure 2 60 50- 30- 20- 10 0 1 2 3 4 5 1 8 9 10 Figure 3 a. Using DC load line, prove that Inq = 22.5 mA and Vpso = 5.5 V for Vaso = 2.5V. b. Draw the AC equivalent circuit at mid frequency. c. Estimate the voltage gain Av = Vo /Ni. d. Determine the dominant high cut – off frequency for the circuit. (yu) 4
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