Which of the following is an advantages of positive feedback* greater gain O All of the choices more linear operation None of the choices O less distortion stable amplifier gain
Q: 3.2 An inverting amplifier has an input resistance of 2 kN. Determine the feedback resistance needed…
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Q: Qi: Choose the correct answer. Each question weighted Si transistor has IcEO = 0, ß = 100, Rc= 2k2,…
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Q: A unity feedback system has the following open loop transfer function; K(s+4)/s2(s+2)(s+6)(s+8).…
A: In this question, A unity feedback system open loop transfer function; K(s+4)/s2(s+2)(s+6)(s+8).…
Q: Calculate the gain of the negative feedback amplifier having A=-1050 and Beta=-0.82.
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Q: A student is working on inverting amplifier having input voltage is 2.5 mV, input resistance is 2…
A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…
Q: For the circuit shown below, find the range of values for the feedback resistor Rf such that the…
A: Given circuit is =
Q: 1. Calculate the gain of a negative-feedback amplifier having A -2000 and B = -1/10. %3D
A: Explanation: Gain of the negative feedback amplifier Af = A1+ βA, where A = -2000 = gain without…
Q: 2) Determine the gain for the op-amp circuit shown in Figure (17). R R R ww R Fig.17
A: 2)The Closed Loop Configuration of Op-amp is possible utilizing feedback. The feedback permits…
Q: A Answer the following questions: Calculate the gain of a negative-feedback amplifier having A (gain…
A: To solve above problem one should know the gain of any close loop system For a system with forward…
Q: An operational amplifier circuit with current shunt feedback configuration has the following…
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Q: Q) An amplifier has an open-loop gain of 100 and a feedback ratio of 0.4. If the open-loop gain…
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Q: Without feedback, an amplifier's gain is 100 dB. If a negative feedback of 3 dB is applied, the…
A: Given, Without feedback, the amplifier gain is AdB=100dB The amount of feedback is (1+Aβ)dB=3dB
Q: The feedback signal of the following system is, Z(s) =. X y + + G a. Z(s)-Y(s) O b. X(s)Z(s) O.…
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Q: A voltage_shunt feedback amplifier has Ri=10 kilo_ohms, Ro=5 kilo_ohms, A=-500 kilo_ohm and B=-2…
A: Given : Generally feedback circuit is a type of circuit in which some part of the output is given…
Q: Q4) a Design a 4 input averaging amplifier.
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Q: Calculate the closed loop gain for the following circuit. Assume A = 0 for both transistors and R,+…
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Q: Determine the bias current, IBIAS, given that the input currents to an op-amp are 7.9 µA and 8.3 µA…
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Q: Q) An amplifier has an open-loop gain of 100 and a feedback ratio of 0.4. If the open-loop gain…
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Q: Q) In the positive feedback, which of the following statement is true. * (a) It is used in…
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Q: Negative feedback increases the noise produced within the amplifier Select one: O True O False
A: Negative feedback used to 1) decrease voltage gain ( gain stabilise) 2) increase bandwidth 3) reduce…
Q: Find the attenuation of the feedback section, B R4 R3 LM324 Vout C2 OUT R1 U1A 10k 0.75uF R2 C1 10k…
A: This is a problem of application of operational amplifiers. The wein bridge oscillator is an audio…
Q: Q) In the negative feedback, which statement is true: * (a) Af = A/(1+Aß), where Af is the close…
A: for this question, gain of amplifier Af= A/(1+Ab).
Q: For the feedback circuit of Fig.Q.2, determine the topology of feedback and find: A, B, A, Rif, and…
A: In the topology of the feedback amplifiers in the feedback voltage series the input impedance value…
Q: Find the attenuation of the feedback section, B R4 R3 ... LM324 Vout C2 R1 U1A 10k 0.75uF R2 C1 10k…
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Q: The feedback signal of the following system is, Z(s)= y G H a. X(s)-Z(s) O b. Z(s)-Y(s) O c.…
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Q: The feedback signal of the following system is, Z(s)= G H a. G(s)E(s) O b. Y(s)G(s) c. G(s)B(s) O d.…
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Q: +Vcc RC Cc RF lic is Rs RL Cc vs R. R;
A: Kindly mention what is the condition for Re as operating point will change if we add Re.
Q: The feedback signal of the following system is, Z(s)=. H O a. Y(s)H(s) O b. G(s)B(s) O c. G(s)E(s) O…
A: Feedback signal is the multiplication of output and feedback factor
Q: 3.1.1 DC Bias of Differential Amplifier +Vcc RC RC Vcz VB=0 V Q2 VB= 0 V VE IE 2 RE IE -V EE
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Q: 1. The overall gain of a multistage amplifier is 140. When negative feedback is applied, the gain is…
A: Given: The open loop gain of a multistage amplifier, A=140 Gain with negative feedback, Af=17.5
Q: An amplifier has gain without feedback and with feedback equal 4.5 x 102 and 1.5 x 103…
A: Given: The gain of the amplifier without feedback (A) =
Q: 2. For an ideal amplifier, the input impedance should be output impedance should be OOohm and…
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Q: In a non-inverting amplifier if the feedback resistor is equal to the input resistor, we produce O a…
A: Draw the circuit diagram of a non-inverting amplifier.
Q: An inverting amplifier has an input resistance of 2 kM. Determine the feedback resistance needed to…
A: In inverting amplifier non invering terminal is grounded,according to virtual short voltage at non…
Q: Find Ray for the feedback amplifier shown below. Qi and Q2 are identical transistors with h=1.IkQ,…
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Q: 2. Calculate the gain, input, and output impedances of a voltage-series feedback amplifier having A=…
A: In the Op-amp circuit, if the input is connected to a negative terminal then it is called inverting…
Q: b) If ß=-0.015 and A =-5×10“, determine the closed-loop gain Ar.
A: Closed loop gain = A/(1+A*bita) Here all A and bita are given.
Q: Calculate the closed loop gain for the following circuit. Assume A = 0 for both transistors and R, +…
A: Given data, gm1=60 mSgm2=24 mSR1=111 kΩR2=25 kΩRD=1.5 kΩ
Q: With negative feedback an amplifier gives an output of 11.2V with an input of 1.15v when feedback is…
A: Given that Input with negative feedback =1.15 V output =11.2 V Input without negative feedback=0.25V…
Q: Si transistor has ICEO = 0, B = 100, Rc=2kQ, Vcc=12 V. Assume that; (VCEQ = Vcc /2). The circuit of…
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Q: Considering an amplifier circuit, applying a negative feedback, the input resistance: Select one: O…
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Q: For the differential amplifier the linearity can be increased by decreasing the overdrive voltage. O…
A: The transfer characteristics of a differential pair MOS is shown below: In the above…
Q: 50 mV anoa o 39 kΩ 2.7 kΩ
A: a) As the feedback from the output is connected to the inverting terminal, then the feedback is…
Q: Assume an op-amp has bias currents of 10.0 LA and 10.2 µA. The input offset current is O20.2 uA 0.2…
A: Given, Bias currents of op-amp are I+=10.2 μAI-=10.0 μA
Q: If Vi = 0.6v, calculate the output voltage Vo and the current through the feedback resistor. 25 kN…
A: In ideal Op-amp, the voltage at inverting terminal is equal to the voltage at non-inverting terminal…
Q: 56. An amplifier has an open loop voltage gain of 10%. With negative voltage feedback, the voltage…
A: Given: An amplifier has open loop voltage gain, Av=105 With negative voltage feedback, the voltage…
Q: Which of the following is a reason for using feedback systems O Bring the system back to the…
A: Feedback system: These are the system in which the part of output signal is processed and it is…
Q: 4-state briefly some important practical applications of both circuits. vin Vac Amplifier Feedback…
A: We need to state some practical application of the above circuit.
Q: 37 The voltage gain of an amplifier without feedback is 3000. Calculate the voltage gain of the…
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Q: A certain noninverting amplifier has Ri of 8.3 kn and Rf of 17.1kn. The closed-loop voltage gain Ay…
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- Slove Boperational amplifiers of your choice both FET and BJT based technology (make sure datasheets areavailable with your final report):A) From the datasheet, find the number of pins of the Op-amp IC, the open-loop gain,bandwidth, CMRR, slew rate, Voltage offset, current offset, input and output impedance,recommended supply voltages. Tabulate your outcomes with evidence from the data sheets.For both types of Op-Amps. Discus advantages and disadvantages of both.B) Mention available amplifiers that this op-amp is used for and discuss in brief itsapplications.For the circuit shown, RI = 1Ω k , Rin =20Ω k , Rout = 60Ω , and RL = 2 Ωk . Whatvalue of A is required to produce a voltage gain of74 dB if the amplifier is to be an inverting amplifier(θ = 180◦)?A certain operational amplifier has an open-loop gain of 50 V/mV at low frequencies (note carefully the units of the gain value), with negligible phase shift and gain variation from d.c. to a maximum of 15 MHz. Above 15 MHz, the gain is reduced and the phase shift becomes very large and significant. (i) What is the amplifier gain at low frequencies expressed in dB? (ii) What is the –3dB frequency (or “break frequency”) of the compensation that should be added to make this operational amplifier unconditionally stable when connected to any passive negative feedback network having a phase shift magnitude of up to 90° maximum? (iii) What is the maximum gain-bandwidth product of an amplifier circuit constructed using this operational amplifier with the frequency compensation that you specified in part (i) of this question?
- A source with equivalent noise temperature Te = 850 K is followed by a cascade of three amplifiers shown in Table 1.0. Assume a bandwidth is 40 kHz, evaluate the overall noise factor and noise figure of the cascade. In order to get better performance of the amplifier system, you may try to re-arrange the amplifier units. Please prove and justify which arrangement is the best to be chosen.Consider the operational amplifier circuit shown below. Assume the operational amplifier in the circuit is ideal. Determine the expression for the output signal, Vout, in terms of Vin,R1 and R2. Given the expression of the circuit [above’s output signal is Vout =3 − 0.5Vin, what is the maximum and minimum voltage that the input signal can have before the operational amplifier saturates.(a) Calculate the poles at the base of Q2, the base of Q5, the collector of Q5, and the emitter of Q6 for the amplifier of (a) with CC = 0. Use fT = 300 MHz and Cμ = 1 pF in addition to the bias parameters (b) Calculate the gain of the amplifier with VA = 50 V and βo = 100. (c) Assuming a unity-gain feedback connection, calculate the phase margin of the amplifier. (d) What value of CC is necessary to set the phase margin at 75◦?
- Consider the circuit shown in FigureP13.24 . a. Find an expression for the output voltage in terms of the source current and resistance values. b. What value is the output impedance of this circuit? c. What value is the input impedance of this circuit? d.This circuit can be classified as an ideal amplifier. What is the amplifier type? (See Section11.6 for a discussion of various ideal-amplifier types.)True or False Increasing RE improves the CMRR for single-ended output by increasing the differential-mode gain anddecreasing the common-mode gain. Increasing RE reduces the transistor DC currents and increases the DC output voltages. The double-ended output of the differential amplifier is always zero if vs1=vs2 for any value of RE.Suppose we have a signal source with an internal (i.e., Thévenin) impedance that is always less than 1000 Ω, but is variable over time. Using the components listed in TableP13.36 , design an amplifier that produces an amplified version of the internal source voltage. The voltage gain should be −20±5 percent.
- An IC amplifier requires a circuit that acts as high-resistance source for driving low-impedance loads so that it can be used as output stage in multistage amplifier. Which circuit best suits this application?Your Boss asks you to get more knowledge about operational amplifiers by studying specific operational amplifiers of your choice both FET and BJT based technology (make sure datasheets are available with your final report): A) From the datasheet, find the number of pins of the Op-amp IC, the open-loop gain, bandwidth, CMRR, slew rate, Voltage offset, current offset, input and output impedance, recommended supply voltages. Tabulate your outcomes with evidence from the data sheets. For both types of Op-Amps. Discus advantages and disadvantages of both.Suppose a differential amplifier has A = 120 dB,and it is operating in a circuit with an open-circuitoutput voltage vo = 15 V. What is the input voltagevid? How large must the voltage gain be forvid ≤ 1 V? What is the input current i+ ifRid = 1 M ?