The feedback amplifier in Figure 1 has Rs = 20kΩ, R1 = 10kΩ, R2 = 100kΩ, R3 = 100kΩ and RL = 10kΩ. It uses an operational amplifier with the following parameters: • Open-loop gain a = 100,000 V/V • Input resistance ri = 200kΩ • Output resistance ro = 100Ω Find the following closed-loop parameters of the circuit, taking into account the loading effects of the source resistance, the load resistance and the feedback network: (a) Feedback factor ƒ (b) Voltage gain Avƒ = vL /vs (c) Input resistance Rinƒ (d) Output resistance Routƒ

The feedback amplifier in Figure 1 has Rs = 20kΩ, R1 = 10kΩ, R2 = 100kΩ, R3 = 100kΩ and RL = 10kΩ. It uses an operational amplifier with the following parameters: • Open-loop gain a = 100,000 V/V • Input resistance ri = 200kΩ • Output resistance ro = 100Ω Find the following closed-loop parameters of the circuit, taking into account the loading effects of the source resistance, the load resistance and the feedback network: (a) Feedback factor ƒ (b) Voltage gain Avƒ = vL /vs (c) Input resistance Rinƒ (d) Output resistance Routƒ

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.3P

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