final_03

# final_03 - Final Exam ECE 137A Monday Name Closed Book Exam...

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Final Exam, ECE 137A Monday March 17, 2003 8-11 AM Name: __________________________ Closed Book Exam: Class Crib-Sheet and 2 pages (4 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 7 2e 8 4d 6 TOTAL 100 1 DOT. ..Q2 of PS A as N-ch

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Problem 1, 25 points Nodal analysis Q1 Q2 Rd1 IS2 Vdd Vss IS1 Vout Vin You will be working on the circuit to the left. Ignore DC bias analysis. You don’t need it. The two transistors have transconductance gm1 and gm2 respectively. Their output resistances Rds1 and Rds2 are both infinity. Part a, 15 points Draw a small-signal equivalent circuit of the circuit 2 DOT. ..Q2 of PS A as N-ch
DOT. ..Q2 of PS A as N-ch

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final_03 - Final Exam ECE 137A Monday Name Closed Book Exam...

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