midterm01

# midterm01 - ECE 137 A Mid-Term Exam February 15, 2001 Do...

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ECE 137 A Mid-Term Exam February 15, 2001 Do not open exam until instructed to. Closed book: Crib sheet and 1 page personal notes permitted There is one problem on this exam (parts A-F) , and your have 50 minutes. Use any and all reasonable approximations Name: _______________________ 1

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Problem 1, 100 points You will be working on the circuit below: RL Rc2 Reac2 Ree2 Ree1 Rb1 Rgen Vgen Vout Q2 Q1 +Vcc _Vee Cout Cee Q1 and Q2: beta=75, Va=200 Volts. Rb1= 10 kOhm. Ree1= ??? Rc2=?? RL=1 kOhm Rgen=1 kOhm Ree2= ??? Reac2=25 Ohm Vcc= +10 Volts -Vee= -10 Volts Cout, and Cee are very big. 2
Part a, 10 points DC bias. Q1 is to be biased with 1 mA emitter current. Q2 is to be biased with 5 mA collector current The collector of Q2 is to be biased at +5 Volts Find: Ree1=_______________ Ree2=_______________ Rc2=_______________ 3

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Part b, 10 points DC bias RL Rc2 Reac2 Ree2 Ree1 Rb1 Rgen Vgen Vout Q2 Q1 +Vcc _Vee Cout Cee On the circuit diagram above, label the DC voltages at ALL nodes and the DC currents through ALL resistors 4
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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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midterm01 - ECE 137 A Mid-Term Exam February 15, 2001 Do...

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