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Unformatted text preview: v s +R s R L +R in ++ v in A v in R o vv + v L (b) Find v L in terms of v s using this model. What is the voltage gain ± v L v s ² of this circuit? (c) Using typical numbers for a microphone preamp circuit, R S = 10 k Ω , R in = 1 M Ω , R o = 1 Ω , R L = 100 Ω , A = 10 5 in the previous model, what is the voltage gain of this circuit? (d) Using the ideal opamp approximations in the ﬁrst circuit, ﬁnd the voltage gain of the circuit and compare it to that of the more accurate voltagedependent voltage source model. 3. Find the Thevenin equivalent circuit between A and B for the following circuit, assuming the ideal opamp approximation. +. 3 cos (880 π t ) V +1000 Ω +B A 5000 Ω 2 Ω 4. Textbook problem 3.3 5. Textbook problem 3.4 6. Textbook problem 3.6 1...
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This note was uploaded on 03/28/2012 for the course ECE ece210 taught by Professor Ece during the Spring '10 term at University of Illinois, Urbana Champaign.
 Spring '10
 ece

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