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.

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.

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

Similar questions

For the feedback amplifier circuit shown below, assuming the internal resistor in each MOSFETs is infinite ( ro = ∞ ) and gm1 = gm2 = gm2 = 2.5mA/V. a) Draw the small AC equivalent circuit of the below amplifier. b) Determine the overall voltage gain.
for identical transistors Hfe=100 and hie=2,5K. according to the elements and values given on the circuit; Determine the feedback topology of the circuit. Draw the non-feedback locator circuit taking into account the feedback effect. Assuming |βA|>>1 , find the feedback gain and voltage gain of the circuit.
The circuit as shown is a shunt-shunt feedback amplifier. Use feedback analysis to find the midband input resistance, output resistance, and transresistance of the amplifier if RI = 500 Ω, RE = 2 kΩ, β0 = 100, VA = 50 V, RL = 5.6 kΩ, and RF = 47 kΩ, when vi and RI are replaced by a Norton equivalent circuit. What is the voltage gain for the circuit as drawn?
If a signal voltage of 30mV is applied to inverting amplifier, find output voltage and phase relationship with input voltage if it has input resistance of 25 ohm and feedback resistance of 50 ohm. NOTE : KINDLY ELABORATE BRIEFLY
Find the loop gain, ideal transresistance, actual transresistance, input resistance, and output resistance for the feedback ampliﬁer shown with RI =100kΩ, RL =15kΩ, and RF =10kΩ.
Find the value of output voltage and closed loop gain of non-inverting amplifier if input voltage is 50 milivolt and it has input resistance of 50 kohm and feedback resistance of 1 Mohm. NOTE : KINDLY ELABORATE BRIEFLY
Given in the figure is a two-stage amplifier design that employs negative feedback. Answer the following questions. Use the notation (R1 + R2 + ... + Rn) for series resistors and (R1 || R2 || ... || Rn) for parallel resistors for clarity and ease. Assume that the transistors are already biased properly in the saturation region and ro1 = ro2 → ∞. Also assume that the capacitors have infinite capacitance. 1.) Find the expression for the open loop gain Av 2.) Derive the resistance Rin which is the resistance that can be seen at the input port of the amplifier
Find the loop gain, ideal current gain, actual current gain, input resistance, and output resistance for the feedback ampliﬁer shown with RI = 150 kΩ, RL = 5k Ω, R1 = 10 kΩ and R 2 =1kΩ.
An ampliﬁer has an open-loop voltage gain of 90 dB, Rid = 50 kΩ, and Ro = 5000 Ω. The ampliﬁer is used in a feedback conﬁguration with a resistive feedback network. (a) What is the largest current gain that can be achieved with this feedback ampliﬁer? (b) What is the largest transconductance that can be achieved with this feedback ampliﬁer?
Assume for a moment that perfectly accurate resistors were available for feedback networks; that is resistor tolerance is 0%. Then any deviation from the value set by the feedback resistor ratio is caused by insufficient raw op-amp gain. What minimum raw gain would be needed to get within 1% if an intended overall gain of 10? What if the intended gain is 100 instead?
Consider the integrating amplifier circuit in Figure 2. Using nodal analysis, derive an expression for vout for the integrating amplifier. In the circuit in Figure 2, exchange the positions of the 0.1uF capacitor and the 5k resistor. a. Use nodal analysis to generate an expression for vout. b. Using this expression, explain what function this circuit performs on an input signal.
2. Design a unity gain inverting summing amplifier that will output the sum of two input voltages. Use a feedback resistor of 2.5 Kohms.