midterm_06

# Midterm_06 - ECE 137 A Mid-Term Exam Do not open exam until instructed to Closed book Crib sheet and 1 page personal notes permitted There are 2

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1 a ECE 137 A Mid-Term Exam February 13, 2006 Do not open exam until instructed to. Closed book: Crib sheet and 1 page personal notes permitted There are 2 problems on this exam, and your have 50 minutes. Use any and all reasonable approximations (5% accuracy is fine. ) , AFTER STATING and approximately Justifying them. Name: _______________________ Problem Points Received Points Possible 1a 7 1b 7 1c 6 1d 15 1e 15 1f 6 1g 14 2a 12 2b 13 2c 5 total 100

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2 a Problem 1, 70 points You will be working on the circuit below: V gen R gen R b1 R ee R c1 R c2 Q 2 Q 1 R L2 R L1 V out+ V out- V cc -V ee V in+ C 1 C 2 Q1 and Q2: β =200, A V =infinity V +Vcc= +5 volts. -Vee= -5 volts Rgen=500 Ohm RL1=RL2=2000 Ohm Rb1=1000 Ohm Ree= ??? Rc1= ??? Rc2= ??? C1 and C2 are very big and have negligible AC impedance.
a Part a, 7 points DC bias. Q1 is to be biased with 3 mA emitter current. Q2 is to be biased with 3 mA emitter current. The DC collector voltages of Q1 and Q2 are both

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## This note was uploaded on 08/06/2008 for the course ECE 137AB taught by Professor Rodwell during the Winter '08 term at UCSB.

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Midterm_06 - ECE 137 A Mid-Term Exam Do not open exam until instructed to Closed book Crib sheet and 1 page personal notes permitted There are 2

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