440_hmk5

# 440_hmk5 - ECE 440 Electronics II Homework#5 1 For the...

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ECE 440 – Electronics II Homework #5 1. For the circuit shown below, assume β = 100 for both BJTs. Find: a. A I = i o /i i b. R in c. R out 2. For the circuit shown below, assume β = 50 and r π = 1.1K Ω for both BJTs. Find: a. A v = v o /v s b. R in c. R out + v o - 10V 10 M ! 20 K ! 80 K ! 2 K ! 1 K ! 85 K ! 15 K ! 4 K ! 500 ! 10 K ! 4 K ! R in R out Q1 Q2 i i i o V cc + v o - v s 1.2 K ! 500 ! R in R out Q2 3 K ! Q1 1.2K ! + - 50 !

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3. For the circuit shown below, assume β = 50 and r π = 1.1K Ω for the BJT. Find: a. A v = v o /v i b. R in c. R out 4. Assume that the circuit shown below contains a non-ideal op amp with open loop voltage gain, µ = 2 x 10 5 , input impedance, R i ’ = 2M Ω , and output impedance, R o ’ = 75 Ω . Find: a. A v = v o / v s b. R in c. R out V cc + v o - v s 10 K ! 8K ! R in R out 8 K ! + - 40K ! + - + - v s 2K ! 8K ! 5K ! + v o - R in R out
5. For the circuit shown below, assume β = 150 and r π = 5K Ω for both BJTs. Find: a. A v = v o /v s b. R in c. R out 6. Assume that the circuit shown below contains a non-ideal op amp with open loop voltage gain, µ = 2 x 10 5 , input impedance, R i ’ = 2M Ω , and output impedance, R o ’ = 75 Ω . Find: a. A v = v o / v s b. R in c. R out V cc + v o - v s 200 ! 5K ! R in R out Q2 5 K ! Q1 4K ! + - 2.5K ! + - + - v s 5K ! 4 ! + v o - R in

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440_hmk5 - ECE 440 Electronics II Homework#5 1 For the...

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