The parameters for each transistor in the circuit shown in Figure P6.75 are β = 100 and VA = ∞. (a) Determine the small-signal parameters gm , rπ , and ro for both transistors. (b) Determine the small-signal voltage gain Av1 = vo1/vs, assuming vo1 is connected to an open circuit, and determine the gain Av2 = vo/vo1. (c) Determine the overall small-signal voltage gain Av = vo/vs. Compare the overall gain with the product Av1 · Av2, using the values calculated in part (b)

Q: What is NOT a potential EMI problem source?

A: we will refer the concept of EMI to identify answer.

Q: a) In an ac transistor amplifier, the circuit includes capacitors as well as resistors. What is the…

A: Brief description: In the above given question we need to explain importance of coupling capacitors…

Q: What is the configuration of the given amplifier circuit below? How are the coupling capacitors…

A: In the given circuit  Input is given to base  Output taken from collector

Q: i) Sketch examples of a MOSFET output v-characteristics, transfer iv-characteristics, and voltage…

A: According to guidelines we need to solve only the first question. According to the question we have…

Q: State at least two reasons why a multistage amplifier circuit would be required in a design compared…

A: Two reasons for the use of the multi stage amplifier circuit over the single stage: The 1-stage…

Q: Substitute the BJT with the complete hybrid equivalent model in the AC equiv draw the resulting…

A:

Q: Give an example of signal flow graph reduction method of transfer function.

A:

Q: What are the AC characteristics of a common base amplifier?

A: BJT is a current controlled Device in which base current control the mode of operation.  Mode of…

Q: 1. Discuss the general condition under which a common emitter amplifier would be used 2. Compare ac…

A: PART (1): The common emitter amplifier is one of the main circuits in  electronic circuit design. It…

Q: b- ]Define resonance. Explain how can it be used to enhance the gain of an amplifier. Can we use it…

A: Since you have asked multiple questions so we will solve the first question for you. If you want any…

Q: 6. What is the main advantage of using a phase modulator rather than a direct frequency modulator?

A: NOTE: We are authorized to answer the first question since the exact one wasn’t specified. Please…

Q: What makes this a common source amplifier?

A:

Q: What is the function of coupling capacitors? Assuming that they are performing their intended…

A: In amplifiers, it is sometimes required to have only an AC signal at the output for an example audio…

Q: What is the condition for over modulation and what are its effects?

A: The over modulation problem is very well observed in amplitude modulation. The phase of the carrier…

Q: What conditions and measurements will allow you to calculate theb parameters for the “black box”…

A: The expression for b parameter for two port network is given as, V2=b11V1-b12I1I2=b21V1-b22I1 Now…

Q: A.What is the phase relationship between the AC input and output voltages in a common emitter…

A: A.The phase shift between input and output in common emitter amplifier  is ? and why ? B.The phase…

Q: Explain the primary function of a large signal amplifier.

A: Large signal amplifier also know as Power Amplifier.Power Amplifies the power input signal. Power…

Q: When does maximum frequency deviation occur in a PM signal? -It occurs at the minimum amplitude…

A: ∆f = kp dm(t)/dt |max Kp is sensitivity of phase modulator m(t) is modulating signal

Q: Draw a real-life MOSFET circuit(Ac model) and derive the circuit in that circuit to find operating…

A:

Q: What is the significance of transfer function?

A: the fallowing statement represents the significance of a transfer function in a system:

Q: 5. What is the approximate frequency of the modulating signal having a bandwidth of 15 kHz and a…

A: In this question we will find frequency of modulating signal with help of bandwidth and frequency…

Q: what was the net outcome, explain the harmonics available before and after the filtering techniques…

A: Harmonics are a disruption in the regular electrical current waveform caused by nonlinear loads.…

Q: Derive the expression for the following in terms ONLY of the small signal parameters and the given…

A:

Q: Describe the combined effect of the RC circuits for higher frequency response in a BJT & FET…

A:

Q: vhat is the rea are typically in the kilohm range, is it a good assumption to use the short-circuit…

A:

Q: Describe the over-all ac analysis procedure for a common collector.

A: The Common Collector Amplifier (CCA) is a bipolar junction transistor (BJT) with the input signal…

Q: a. A system is provided in Block Diagram form as shown in figure 4, draw its equivalent system in…

A: The given block diagram can be reduced by considering the parallel connected and cascade connected…

Q: What circuit compensates for the greater frequency deviation at the higher modulating signal…

A: The solution is given below

Q: Transform and draw the equivalent small signal circuit model using ONLY the HYBRID-PI model.

A:

Q: In the DC equivalent circuit of an amplifier, how the ac signal and capacitors are treated?

A: We need to tell about DC equivalent circuit of amplifier.

Q: What can we eliminate negative parts of an AC signal, with and without using offset

A: Eliminate the negative part of the ac signal without using offset voltage  Using a positive clamper…

Q: Theoretical calculations: 5. How does the bandwidth change in relation to increasing signal…

A:

Q: Derive an approximate expression for the cavity gain of an SOA in the limiting case of a 3 dB…

A:

Q: What is a theory Single-sideband modulation

A: A Sideband is a band of frequencies, containing power, which are the lower and higher frequencies of…

Q: Sketch a simple common-gate amplifier circuit and discuss the general ac circuit characteristics…

A: The simple gate circuit with the constant current source and its ac equivalent circuit is drawn…

Q: Define the resonance? Explain how can use it? Can we use it for every amplifier? Why ?

A: Resonance is the phenomenon of increased amplitude that occurs when the frequency of a periodically…

Q: Define signal

A: The signal carries the messages from one person to another or from one place to another. In…

Q: what should be the operating frequency to have a high frequency gain of  30 % lower that the mid…

A: The circuit diagram is given as We know that the frequency response of opamp is like a low pass…

Q: In an ac transistor amplifier, the circuit includes capacitors as well as resistors. What is the…

A: We need to explain the role of capacitor in bjt amplifier

Q: Describe briefly the effects of atmospheric conditions on the quality of signal.

A: Effects - (1) Rise in atmospheric temperature leads to decrease in quality of signal that means…

Q: What are circuits can used to design Class B amplifier ? explain the important features

A: class B amplifier The active device (transistor) only conducts for one half cycle of the input…

Q: The figure below of signal flow graph shown has: 3 4 6. 5. 2.

A: Given

Q: Why do we need to consider small signal analysis while explaining an AC response of a transistor?

A: There are two types of signal  1)Small signal  2)Large signal- it is called as power amplifier, In a…

Q: Explain the difference between low-frequency numerical methods and high frequency methods. Give…

A: Low Frequency Numerical Method: A mathematical calculation of low-frequency electromagnetic field…

Q: (b) The multistage amplifier circuit of Figure Q.2(b) have the following parameters: Qi and Q2: B=…

A:

Q: 1. What are the AC characteristics of a common base amplifier?

A: We are authorized to answer the first question since the exact one wasn’t specified. Please submit a…

Q: Q4) (a) Explain what is meant by the term, modulation, and produce a diagram of an Amplitude…

A: We need to explain what is meant by modulation and also need to give a diagram of an amplitude…

Q: What is the objectives of generate discrete signal by using sampling frequency?

A: