(b) For a series shunt feedback system, the open loop gain Av and closed-loop gain Arof the amplifier are 100 and 50, respectively. Find the amplifier's input resistance and output resistance if the input and output resistances of the basic amplifier are Ri 15 kN and Ro = 40 k2 respectively. Also, find the closed-loop bandwidth if the open-loop amplifier bandwidth is 10 kHz. %3D

(b) For a series shunt feedback system, the open loop gain Av and closed-loop gain Arof the amplifier are 100 and 50, respectively. Find the amplifier's input resistance and output resistance if the input and output resistances of the basic amplifier are Ri 15 kN and Ro = 40 k2 respectively. Also, find the closed-loop bandwidth if the open-loop amplifier bandwidth is 10 kHz. %3D

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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(2) ukäi Q) In the negative feedback, which of the following * .statement is true (a) Gain, noise, distortion as well as the bandwidth of the amplifier are decreases. (b) The feedback is out of phase with their input signal and the the gain stability decreases. (c) It is called regenerative and used in amplifiers. (d) The input voltage is reduced and the input and output impedances are improved.
A negative feedback closed loop system gain, y(t) /r(t) ), of at least 7.5 is needed with a ß = 0.1. a. What is the minimum value of the forward gain, 4, that will allow this? b. What is the loop gain for this system?
Find the desired values below in the feedback amplifier circuit in the figure. a) Voltage and current in amplifier circuit when Rf resistor is open circuit and RL resistor is present Show step-by-step the formula that gives the profit. b) Step of the formula showing the feedback current gain Ai when the Rf feedback resistor is connected find step.
Consider the following statement: In feedback amplifiers, concerning the connections between the direct amplifiers and the feedbacks network, a shunt connectiın at the input part servers to set an increased versiın of the input impedance of the direct amplifier, whereas again a shunt connection at the output part services to set a decreased version of the output imdepance of direct amplifier. Explain what is wrong with the statement above by drawing representative circuit diagrams and outlining the necessary calculations.
a) Two feedback configurations are shown in Figures Q1.a(i) and Q1.a(ii). Derive the closed-loop gain Af in each case. V₁. V₁. A1 B1 Figure Q1.a(i) A₁ B₁ Figure Q1.a(ii) A₂ A₂ B₂ ܘܢ -V
Consider the series-shunt feedback amplifier of Figure below. Assume that the voltage divider (R1, R2) is implemented with a 1-MN potentiometer. Assume that the MOSFET is %3D biased so that gm = 4 mA/V and r, is large. Also, Rp = 10 kN. VDD Find the value of R1 that results in a closed-loop gain of 5 V/V. Rp R2 R
control system, the A feedback Conerollar and procers thansfon fanction St40 GCS) = De termine a Stab le the gain K for gotem.
How do I find the output voltage?
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