las Rs negligibly mV, and Vo= 5V determine: Av, B, Avf (including the units) Rif, Rof if Ri= 5 Kohm & Ro = 4 Kohm.
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- Feedback:2. An ideal series-shunt feedback amplifier has Rs negligibly small. If Vi = 100mV, Vfb =99mV, and Vo= 5V determine:a. Av , β, Avf (including the units)b. Rif, Rof if Ri = 5 Kohm & Ro = 4 Kohm.Find out the gain of inverting amplifier if it is performing on 12 V supply, it has input resistance of 20 ohm and feedback resistance of 50 ohm respectively. NOTE : KINDLY ELABORATE BRIEFLYThe 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?
- Q2: (A): What is the advantages and disadvantages of RC coupled amplifier?A certain op-amp is used in a feedback configuration having a gain of 20 and a bandwidth of 500 kHz. a)If the external resistor values are changed to increase the gain to 40, what is the new bandwidth? The new bandwidth is 250khz What is the unity-gain bandwidth of the op-amp ??If the input voltage is 10V, input and feedback resistance are 10 ohm and 10 kohm respectively find its output voltage if it is working on inverting amplifier. NOTE : KINDLY ELABORATE BRIEFLY
- 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.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 unity-feedback system has forward transfer function (see attached). a) Sketch the root locus for this system as K varies from 0 to ∞; b) Use the Routh-Hurwitz test to determine the range of K for the system to be stable; show this value of K on the root locus plot.
- 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.For the feedback amplifier circuit shown below, find the output voltage if the parameters of the circuit are as follows: R1 = 5.3 kΩ, R2 = 5.5 kΩ, V1 = 3.8 mV, V2 = 6.6 mV. Give the answer calculated to 1.d.p.An op-amp has a unity-gain frequency (funity) of 12MHz. What is the amplifier's bandwidth, in kHz, when ACL = 536?