final_05

Final_05 - Final Exam ECE 137A Wednesday Name Closed Book Exam Class Crib-Sheet and 3 pages(6 surfaces of student notes permitted Do not open this

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Final Exam, ECE 137A Wednesday March 16, 2005 8-11 AM Name: __________________________ Closed Book Exam: Class Crib-Sheet and 3 pages (6 surfaces) of student notes permitted Do not open this exam until instructed to do so. Use any and all reasonable approximations (5% accuracy), . Show your work: Full credit will not be given for correct answers if supporting work is missing. Good luck Time function LaPlace Transform δ (t) 1 U(t) 1/s e α t U ( t ) 1 s + e t cos ω d t ( ) U ( t ) s + s + ( ) 2 + d 2 e t sin d t ( ) U ( t ) d s + ( ) 2 + d 2 Part Points Received Points Possible Part Points Received Points Possible 1a 15 3a 5 1b 10 3b 8 2a 1 3c 12 2b 2 4a 7 2c 2 4b 7 2d 12 4c 5 2e 8 4d 6 TOTAL 100 1 a
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Problem 1, 25 points Nodal analysis R 1 R 2 R 3 V in V out Q 1 You will be working on the circuit to the left. Ignore DC bias analysis. You don’t need it. The transistor has transconductance gm1. Its drain-source resistances Rds1 is infinity. Part a, 15 points Draw a small-signal equivalent circuit of the circuit 2 a
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3 a
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Part b,10 points Find, by nodal analysis, a small-signal expression for: Vout/Vin= __________________ 4 a
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5 a
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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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Final_05 - Final Exam ECE 137A Wednesday Name Closed Book Exam Class Crib-Sheet and 3 pages(6 surfaces of student notes permitted Do not open this

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