An operational amplifier with voltage-series feedback configuration shown in Figure Q3(c) has the following parameters: (c) A = 1350, R, = 12 kN, ß = 0.0048 Calculate the resistance of R2 and gain with feedback (A;) of this circuit. R1 R2 Figure Q3(c) Analyse ONE (1) effect on output voltage when resistance R, is made larger in this circuit. (d)
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- The feedback amplifier shown has R1 = 1kΩ, R2 = 100 kΩ, RI = 0, and RL = 10 kΩ. (a) What is β? (b) If A =92 dB, what are the loop gain T and the closed loop gain Av? (c) What are the values of GE and FGE?Find the desired values below in the feedback amplifier circuit in Figure 2.a. Find the no-load voltage gain in the amplifier circuit while the Rf resistance is open circuit. b. Find the voltage and current gain in the amplifier circuit, while the Rf resistance has an open circuit and the RL resistance.c. Find the Rf value that makes the feedback current gain Ai/3 when the Rf feedback resistor is connected. Indicate the assumptions you receive in your transactions. β = 75Could you please solve c) and d) parts of this quesiton and explain step by step. Design a BJT collector feedback amplifier network pointing out input and output terminals with β=200, Zi=1 kΩ. When an input signal Vi=10 mV AC and Ii=1 mA AC is applied to the network, an output AC signal Vo=2V AC with output current Io=60 mA AC is obtained. a) Draw the BJT amplifier network you prefer to design and explain why you choose this network. Explain the aims and reasons in using of all the peripheral components handled on your network b) Draw AC equivalent re model of the network c) Calculate Vcc, RF, RC, Zo, and Av d) Find the output signal Vo , if Vi = 50 mV DC is applied to the input instead of 1 mV AC.
- 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?Find the desired values below in the feedback amplifier circuit in the figure. a) Find the no-load voltage gain in the amplifier circuit when the Rf resistor is open circuit. b) Voltage and current in amplifier circuit when Rf resistor is open circuit and RL resistor is present Find your earnings. c) When the Rf feedback resistor is connected, the Rf value that makes the feedback current gain Ai/3 find it. Indicate the assumptions you take in your transactions.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 desired values below in the feedback amplifier circuit in Figure 2.a. Find the no-load voltage gain in the amplifier circuit while the Rf resistance is open circuit. b. Find the voltage and current gain in the amplifier circuit, while the Rf resistance has an open circuit and the RL resistance.c. Find the Rf value that makes the feedback current gain Ai/3 when the Rf feedback resistor is connected. Indicate the assumptions you receive in your transactions.Find the closed-loop transconductance, input resistance, and output resistance for the series-series feedback amplifier as shown if the op amp has an open-loop gain of 80 dB, an input resistance of 25kΩ , and an output resistance of 1kΩ. Assume the amplifier is driven by a signal voltage with a 10-kΩ source resistance, and the feedback network is implemented with R2=91kΩ and R1=10kΩ.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.
- 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 BRIEFLYAssume an operational amplifier is working on inverting amplifer in which it takes input resistance and feedback resistance of 30 ohm and 60 ohm respectively. If input voltage is applied at 150 volt then examine following parameters1.Evaluate over gain of amplifier2.Evaluate the gain of opamp if input voltage is applied on non inverting amplifier3.Calculate output voltage of amplifier4.If input voltage is changed from inverting terminal to non inverting terminal then calculate its output voltage5. If we add one more input resistance of 40 ohm at inverting terminal at 20 voit input supply voltage and working as adder then calculate the output voltage.Assume an operational amplifier is working on inverting amplifier in which it takes input resistance and feedback resistance of 30ohm and 60ohm respectively.If input voltage is applied at 150 volt then examine following parameters. Evaluate the gain of opamp if input voltage is applied on non-inverting amplifier. Options: A)4 B)3 C)2 D)5