I need help understanding part B. See attached photo. Chapter 12, Problem 12.77PA feedback system has an amplifier with a low-frequency open-loop gain of 5 × 104 and has poles at 103 Hz, 105 Hz,and 107Hz (a) Determine the frequency f180 at which the phase of the loop gain is 180 degrees. (b) Determine thefeedback transfer function ẞ for which the phase margin of the system is 45°. (c) Using the results of part (b),determine the low-frequency closed-loop gain.SAVE ☐

Given Data:Open-loop gain: A0=5×104Poles: 102 Hz, 104 Hz, and 107HzThe open-loop transfer function…

Answered: Chapter 12, Problem 12.77P A feedback…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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I am having trouble understanding part B. see attached photo
Consider the following feedback amplifier circuit. Assume lambda= 0, VDD RD2 R01 VinM₁ M₂ -Vout Select one: O a. none of these R₂ the open loop input resistance RinoL and the closed loop input resistances RincLare respectively: O b. RinoL = 1/gm and RincL= 1/gm(1+kA1) O C. RinoL = ∞o and Rincl= (1+ KA1) d. RinoLand RinCL = 00
Question 666 electric Full explain this question very fast
K The open loop transfer function of unity feedback system is By what factor the gain (K) should s(Ts+1) be multiplied so that the damping ratio is increased from 0.2 to 0.8?
An uncompensated system shown in Figure 3(a) has forward transfer function G(s) with a unity feedback. a. Design a phase lead compensator shown in Figure 3(b) cascaded with the uncompensated system shown in Figure 3(a) that will have a 40% or better improvement of the settling time, at least 3 times improvement in percent overshoot. Assume a compensator zero at (given value zc = -10).Show all the complete solution.
8. For the collector feedback configuration, determine : +16 V (a IB (b) Ic () Vc 3.6 kQ 470 k2 Vc IB B = 120 0.51 k2
Given the feedback circuit below and assuming the voltage amplifier has gain A₂, input resistance R₁ and output resistance Ro, answer the following questions: + a. Loop gain b. Closed loop gain Re C. Input resistance d. Output resistance Rin м + RE A) Sketch the feedback small signal model of this circuit. (Hint: You may convert the input VIN and source resistance Rs to its Norton current equivalent if needed) B) Find the following in terms of the amplifier parameters and resistances R, and RF: Rout
(a) Identify the correct answers 1. Virtual ground of an OP-AMP (a) Is formed only with negative feedback (b) Is always an AC ground, may occasionally be a DC ground (for PMOS) (c) Is coined as a terminology where the input signal splits equally between the terminals (d) Leads to the concept of almost zero difference between the two inputs (both DC and AC) using feedback 2. In an OP-AMP based circuit (a) Phase margin of the closed loop transfer function is a measure of stable operation (b) 45° is a desirable phase margin as it balances the frequency domain stability and the time domain settling optimally (c) Absolute open loop gain numbers are not that important, as long as they are large (d) 45° is only achieved when the RHP zero is placed on one of the poles 3. In a differential amplifier biased with a given tail current I, to increase the overdrive voltage by 2X without changing input capacitive loading, we should (a) Increase W by 2X and reduce L by 2X (b) Reduce W by 2X and…
Need Help on #1.5 part (a)
of tion A voltage-voltage feedback amplifier employs a basic amplifier with input resistance of 20 MOhms, output resistance of 2kOhms and gain A = 1500. The feedback factor k= 0.2. The closed loop input resistance Rinct, and the closed loop output resistance RocLof the closed-loop amplifier are: RinCL= GO and RoutCL= S2
a) Negative feedback circuits such as the Schmitt trigger are used to solve noisy scenarios in comparator circuit applications. Using circuit diagrams and waveforms, explain clearly how this is achieved. b) An LM35 temperature sensor has the following transfer function: Vout 10mV °C x Temp (°C) Design an electronic circuit to turn on an LED rated at 5V whenever the temperature falls below 85°C. The circuit should use a comparator, a few resistors and the LM35 temperature sensor. You should demonstrate by calculation and by simulation in multisim or proteus that your circuit works correctly. Only screenshots are required for simulation no files needed.
12.5 The open-loop gain of an op-amp is 175,000. Its common-mode gain is 0.18. Determine the CMRR in dB.

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