The open-loop gain of an amplifier is A = 5 × 104. If the open-loop gain decreases by 10 percent, the closed-loop gain must not change by more than 0.1 percent. Determine the required value of the feedback transfer function β and the closed-loop gain Af.

The open-loop gain of an amplifier is A = 5 × 104. If the open-loop gain decreases by 10 percent, the closed-loop gain must not change by more than 0.1 percent. Determine the required value of the feedback transfer function β and the closed-loop gain Af.

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

See similar textbooks

Related questions

Q: What is the maximum number or electrons that can exist in the 3rd shell of an atom? Please explain p...

A: According to Bohr's atomic model, electrons revolve in a circular orbit around the atomic nucleus. M...

Q: 6

A: Draw the circuit diagram for the NOT gate,

Q: You wock aaterial engineer atansirerat development, mafacturing and mintenance copany athe MENA repi...

A: a) Switch reluctance motor is widely used in the aircraft due to its advantages over the other motor...

Q: QUESTION: Apply thevenin’s theorem for the network external to RL with all necessarysteps and formul...

A: Given circuit is

Q: In the conduit diagram shown in Figure 1–3, determine how many wires are in each conduit between eac...

A: The circuit is shown below: Between the three-phase line and the disconnect switch. The switch is ...

Q: Is the relationship between the change in Vgs and the resulting change in In linear or non- linear? ...

A: The relation between the gate-source voltage and the diode current can be given by the Shockley’s eq...

Q: A. If the probability of error of BPSK is 0.85 then Pe of BFSK is? B. What happens to the radio wa...

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: Why is the input impedance to a JFET so high?

A: JFET - JFET is voltage controlled device. Which has three terminals gate(G), source(S) and drain(D)....

Q: Determine the voltage across inductor. Sensor 1= 0 Light bulb 0.4 H3 1/40 F 1A

A: Before the switch is shifted, the circuit will be at steady-state at t = 0-. The capacitor will be o...

Q: Examine carefully the circuit below. 1. What is the transistor type? 2. What is the biasing type 3. ...

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you. ...

Q: Q4. Plot the output waveform Q for a JK Flip-Flop with positive going edge. Does it have any differe...

A: Construct the truth table for the positive edge trigger JK flip-flop with clear input.

Q: Sketch the energy band diagrams (i) at thermal equilibrium and (ii) at !lat band for the following M...

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: Plz i need step by step

A: Observation on transmission side: Calculate the transmission power in dB,

Q: Given the sinusoidal voltage ? (?) = 70 sin(4π? + 10) V find: (i) The amplitude of the maximum volta...

A: The general expression for the sinusoidal signal is given as:

Q: SIC interpet By optaining the time the FOllowing Constant în REJ diFFerential equations L= coiL Pndu...

A: Consider the first-order equation of electric circuit,

Q: Solve the following, if the radio wave transmitted at an angle of incidence 1.187radians, with a wav...

A: The given points are:

Q: 6 For the circuit shown in Figure P5.41, assume that switch Si opens at t = 96 s and switch S2 opens...

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you ar...

Q: Describe in your own words with proper diagram and characteristics curve : why theapplication of a n...

A: For smooth operation and to turn on P-Channel Depletion-Type MOSFET, the gate voltage applied at the...

Q: Discuss which hypothesis is better to be used with AC generator in the airplane

A: It is better to use independent hysteresis with the AC generator used in the airplane.

Q: 5. For the square voltage waveform displayed on an oscilloscope shown in Figure 2, find (a) its freq...

A: Given that V/cm switch is on 40V/cm and time/cm switch is on 5 micro sec

Q: Calculate R for the full deflection.

A: Since, the input is provided at the non-inverting terminal, then the op-amp is known as the non-inve...

Q: Solve for (i) & (ii)

A: The expression of signals is, a). (i). Considering the first signal, Determining the composite fre...

Q: A 220 V (line), three-phase, Y-connected, synchronous motor has a synchronous impedance of (0.25 + j...

A: The circuit diagram for the synchronous motor is shown be

Q: You are working as a demonstration assistant for a physics professor. He shows you the circuit in th...

A: The circuit is shown below: We will first calculate the value of the bulb resistance R1, the calcul...

Q: The block diagram shown in the figure describes a servomotor deployed in position control of an aile...

A: Given block diagram is = Given values are =

Q: Open loop gain of an opamp is infinite. Use this statement to establish virtual short circuit in o...

A: For an ideal operational amplifier (opamp), the inverting and the non-inverting input terminals have...

Q: In the following circuit, the lights (lamps) loads (L) are balanced. Each lamp (L) is set at 500 W a...

A: Given circuit is = Three phase motor with 5 kW and 0.8 power factor. Phase to neutral voltage of ...

Q: Describe an example of CR circuit with diagrams, phase shift between voltage and current. How it can...

A: Circuit diagram of CR circuit is given by, The given circuit is series RC circuit in which capacito...

Q: The transfer function of a second-order unstable system is given by G (s) = The system is to be stab...

A: Given that =

Q: Determine whether or not each of the following signals is periodic. If a signal is periodic, determi...

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: 7

Q: Two parallel long wires with radius a lying along the z axis with current I flowing in opposite dire...

A: (a) Write the expression for the magnetic field intensity H1 for the wire with the current in the po...

Q: 9 In the filter circuit shown in Figure P6.29: Rs = 5 k2 C = 56 nF R = 100 k2 L= 9 µH Determine: a. ...

A: As per our guidelines we can only answer a maximum of three sub-parts at a time. Please resubmit the...

Q: 400N 1. The switch has been at the left side for a long time before moving to the right position at ...

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you ar...

Q: 2 The electric power company is concerned with the loading of its transformers. Since it is responsi...

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: You work as a material engineer at an aircraft development, manufacturing and maintenance company in...

A: a) Switch reluctance motor is widely used in the aircraft due to its advantages over the other motor...

Q: Sketch the transfer characteristics of a n-channel depletion-type MOSFET if Vp= -5V and IDSS =10mA

A: N channel depletion type of the MOSFET is shown below: The transfer characteristics for the N chan...

Q: 1.1Solve the total resistance, total current, individual currents, and individual voltages of the fo...

A: Find the total resistance of the circuit.

Q: Explain the function of the 7493 and 7490 ICs. Explain their inputs, outputs, mod number, etc. Provi...

A: The function of the 7493 IC: It is made of two negative-edge triggered counters, a MOD-2 up counter,...

Q: The heating element in a soldering iron has aresistance of 30Ω . Find the average power dissipatedi...

A: The formula for the average power in an ac circuit, The soldering iron is connected to the voltage ...

Q: Dr. Eng. Ammar Ali Sahrab Q.20: For the circuit shown, find: 1. Output voltage "Vo"? V-480cos400t Vo...

Q: 1.2Solve the total resistance, total current, individual currents, and individual voltages of the fo...

A: Find the equivalent resistance of the given circuit.

Q: 1. A Type K Thermocouple has the hot junction connected to the exhaust gas duct of a steam turbine. ...

A: It is known that the sensitivity of the type K temperature is 41 µC/oC. Write the expression to calc...

Q: Mention the distance and frequency of type of radio waves approximately. Give the values only in the...

A: (1) Surface wave - The electromagnetic wave which propagate along surface of earth is called surface...

Q: 80 Q.30: For the ideal transformer circuit shown, when V=16cos3t Volt, find the delivered to (4Q) re...

A: Calculate the voltage across the primary side of the transformer using the KVL in the loop abgea,

Q: 1

A: Consider the p’ is the complement of p, q’ is the complement of q, and r’ is the complement of r. Co...

Q: (a) Using superposition theorem, find the current through R3 for the networkbelow. Draw the circuits...

Q: The voltage across and the current through a load are expressed as follows v (t) = -170 sin 377t %3D...

A: Drawing the phasor diagram for the given current and the voltage:

Q: b) FROM STUDY: It has been seen that intense corona effects are observed at a working voltage of 33 ...

A: (i) In any conductors corona occurs due to formation of electron avalanches near conductor when elec...

Q: A magnetic circuit in the following figure is made of silicon steel, for which the B-H relationship ...

A: The number of the turns on the outer legs are given as: N1=N2=500 turns Evaluating the area of the c...

Question

The open-loop gain of an amplifier is A = 5 × 10⁴. If the open-loop gain decreases by 10 percent, the closed-loop gain must not change by more than 0.1 percent. Determine the required value of the feedback transfer function β and the closed-loop gain A_f.

Expert Solution

Step 1

If A_f represents the closed-loop gain, then the change in the closed-loop gain can be represented by the following equation:

According to the given information, if the open-loop gain changes by 10 percent, then the closed-loop gain must nor change by more than 0.1 percent.

Therefore,

Step 2

Plugging the value of the open-loop gain into equation (2), the value of the feedback factor will be

Therefore, the value of the feedback factor will be

Step by step

Solved in 3 steps with 6 images

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A. If the forward gain is 5 and feedback gain is 1, determine the close-loop gain of a negative feedback amplifier. answer: B. For a Wien-bridge oscillator (as presented in the lecture), if the feedback resistor has a value of 10-kohm, determine the value of Ri (in kilo-ohm). answer:
Q1/ (a) A negative-feedback amplifier has a closed-loop gain of Af=100 and an open-loop gain of A =5 x 10*. Determine the feedback transfer function p. (b) If p=10.012 and Af = 80, determine the open-loop gain A.
Discuss the difference between the current series negative feedback amplifier and voltage shunt feedback amplifier in terms of output impedance, input impedance, voltage gain, bandwidth, distortion and noise.
2-) The AC equivalent of a feedback amplifier circuit is given in the figure on the right. (Hfe100, Va = ∞, Ic1 = 15 mA, Ic2 = 5mA and Ic3 = 5 mA) a) State the type of feedback used in the circuit, explaining the reason. b) Draw the small signal equivalent of the amplifier circuit. c) Calculate the value of β for the feedback by drawing the β circuit. d) Find the Avf = Vo / Vs closed loop gain of this circuit. e) Find the Rif and Rof values.
Analyze the circuit shown in Figure Shown.(i) Determine the type of negative feedback used in the circuit by showingthe suitable process. (ii) Derive the equation for the feedback factor and the gain of the circuit. (ii) Calculate the feedback factor and the gain of the circuit if R1 = 1.2 kΩ,R2 = 15 kΩ and RL = 6.8 kΩ.
The transistor parameters for the circuit shown are VTN = 0.4 V, Kn =0.5 mA/V2, and λ = 0.(a) Discuss the feedback topology, show the input ant output connections (series orshunt)(b) Find the feedback factor β (find the transfer function without feedback first)
Find the loop gain, ideal transconductance, actual transconductance, input resistance, and output resistance for the feedback ampliﬁer as shown with RI =15 kΩ, RL =20 kΩ, and R1 =6kΩ.
Ques 2: What is the Voltage series feedback? Explain the effect of feedback on gain and input, outputimpedance
An open loop Transfer function of unity feedback system is given by G(s)= 1/(s+2)^2 The closed loop transfer function will have poles at
What would be the value of feedback voltage in a negative feedback amplifier with A=100; β =0.03 and input signal voltage = 40mv?
(a) Calculate the sensitivity of the closed-loop input resistance of the series-shunt feedback ampliﬁer with respect to changes in open-loop gain A:SRinA = A/ Rin ∂Rin/ ∂A (b) Use this formula to estimate the percentage change in closed-loop input resistance if the openloop gain A changes by 10 percent for an ampliﬁer with A = 94 dB and β = 0.01. (c) Calculate the sensitivity of the closed-loop output resistance of the series-shunt feedback ampliﬁer with respect to changes in open-loop gain A:SRout A = A /Rout ∂Rout /∂A (d) Use this formula to estimate the percentage changeinclosed-loopoutputresistanceiftheopenloop gain A changes by 10 percent for an ampliﬁer with A =100 dB and β =0.01.
A unity Feedback system is characterized by open loop transfer function G(s) = K / S(S+40) The system is having a damping ratio of 0.5. Determine the following. The value of gain K is : Natural frequency of Oscillation is: Rise time in seconds is : Peak time in seconds is : Peak overshoot in percentage is :