# ex2 - OPERATIONAL AMPLIFIERS Sample Problems Dr Aydn I...

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OPERATIONAL AMPLIFIERS Sample Problems - Dr. Aydın ˙ I. Kars ¸ılayan 1. In the following circuit, the opamps are ideal. (a) Find the transfer function T ( s ) = V o ( s ) /V i ( s ) . (b) Sketch the magnitude Bode plot of T ( ) . (c) Find V o ( t ) for V i ( t ) = 0 . 1 sin(2 π 10 4 t ) . (d) Simulate the circuit to verify your results in (b) and (c). Provide the schematic and all necessary plots with measurements. U 2 R 7 2k R 8 2k R 9 20k 2k R 1 1k R 3 2k R 2 1k R 4 4k R 6 + - V i 5u C 1 30k R 0 1n C 3 200p C 2 1k R 5 U 1 0 0 0 0 V o 0 0 0 0 2. For the circuit below, open-loop gain of the opamps is A ( s ) = 2 × 10 5 1 + s 2 π 5 . (a) Find the transfer function T ( s ) = V o ( s ) /V i ( s ) . (b) Sketch the magnitude Bode plot of T ( ) . (c) Find V o ( t ) for V i ( t ) = 0 . 01 sin(2 π
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