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- 1. Describe the high frequency response and phase shift for BJT and FET transistors using MillersTheorem ata) Input RC circuitb) Output RC circuit The subject : Analogue Electronics IIExplain Phase inversion of Common Emitter Amplifier. How Common Base Amplifier differs from Common Emitter and Common Collector Amplifier? Calculate Voltage Gain if RC = 150 Ω and RL = 200 Ω, IE = 1.5mAQues1: Draw the circuit diagram of a two stage RC coupled amplifier. Explain the importance of eachcomponent. Draw and explain its frequency response.
- Consider the circuit. The transistor has a parameter β that varies between 50 and 200. The operation of the circuit and the electrical variables at the end points must be known. end points. Calculate the following for β = 50 and β = 200. a) lE, VE and VB (DC analysis). b) The input resistance Rin (small signal analysis). c) Voltage gain V0/ Vsig (Small Signal AnalysisAnswer these questions. Explain Phase inversion of Common Emitter Amplifier. How Common Base Amplifier differs from Common Emitter and Common Collector Amplifier? Calculate Voltage Gain if RC = 150 Ω and RL = 200 Ω, IE = 1.5mAVs=100 mV peak-to-peak, 1 kHz sine signal, Kn=0.4mA/v^2 ,Vt=1V , λ=0.01V^-1 Make the DC analysis of the above given mosfet amplifier circuit. Simulation to tableWrite down the measured values and mathematical calculation results. (The valueswith the units.)DC Parameters ,Measured value ,Calculated ValueVGETCVGSVDVDSIDb. Draw the small signal model for the AC analysis of the circuit. Find the gm, ro, Av values.c. Show the Vs input signal and the Vo output signal of the circuit on the oscilloscope. Volt/div of channels andSpecify time/div values.
- The ac equivalent circuit for an amplifier is shown. Assume the capacitors have infinite value, RI =750Ω, RB =100 kΩ, RC =100 kΩ, and R3 =100 kΩ. Calculate the input resistance and output resistance for the amplifier if the BJT Q-point is (75 μA, 10 V). Assume βo =100 and VA =75 V.(i)Calculate the modulation indexes and sketch the output spectrums for both modulators.(ii) Analyze the modulation indexes and the bandwidth if the modulating signal frequencyfor both modulators changed to 1 kHz. Sketch the output spectrums.What replaces each of the following elements when we draw the mid-band small-signal equivalent circuit for an amplifier: a. a dc voltage source; b. a coupling capacitor; c. a dc current source?
- The ac equivalent circuit for an amplifier is shown . Assume the capacitors have infinite value, RI = 750 Ω, RB = 100 kΩ, RC = 62 kΩ, and R3 = 100 kΩ. Calculate the voltage gain and input resistance for the amplifier if the BJT Q-point is (40μA, 10 V). Assume βo = 100 and VA = 75V.What are two causes of “loading effects” in an amplifier circuit?For the NMOSFET in the circuit below, K = 4.00mA/V^2, VTHN = 1.00V, l = 0V^-1, and VIN = 4.00V.a. Draw the large signal model and small signal model of the circuit. b. Solve for IDS and VOUT and verify any assumptions you made. c. Derive an equation for the small signal gain of the circuit, vout / vin as a function of the vin radian frequency, w.