Consider the amplifier shown. Assume that the transistor has the following small signal parameters: A gm = 4 x 10-³ V2 ro 10 x 10³ a) Draw the small signal model. Assume that the frequency is high and model the capacitors as short circuits. b) Using the above small signal model, perform small signal analysis and determine a numerical value for Av. Show your work! Do not make approximations. c) Using the above small signal model, perform small signal analysis and determine a numerical value for Ri. Show your work! Do not make approximations. Vin 5V www 30K 20K 5V www www 2K 500 5V 5K 오 C1 HE C2 Vo

Consider the amplifier shown. Assume that the transistor has the following small signal parameters: A gm = 4 x 10-³ V2 ro 10 x 10³ a) Draw the small signal model. Assume that the frequency is high and model the capacitors as short circuits. b) Using the above small signal model, perform small signal analysis and determine a numerical value for Av. Show your work! Do not make approximations. c) Using the above small signal model, perform small signal analysis and determine a numerical value for Ri. Show your work! Do not make approximations. Vin 5V www 30K 20K 5V www www 2K 500 5V 5K 오 C1 HE C2 Vo

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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2. The parameters of the transistor as shown in the figure below are ß = 100 and VA = 100V. a. Find the dc voltages at the base and emitter terminals. b. Find Rc such that VCEQ = 3.5V. c. Assuming Cc and CE act as short circuits, determine the small-signal voltage gain Av = Vo/Vs. d. Repeat part (c) if a 5000 source resistor is in series with the vs signal source. V+ = +5 V Rs = 100 £2 www Us Cc RB = 10 ΚΩ I= Iausmi 0.35 mA www RC -000 V=-5 V CE
Question 6 A large signal circuit model for a MOSFET consists of a dependent current source in parallel with an output resistance, ro, where ro can be expressed as 1/1lp or VA/ID. True False
Correct the sentence: The aim of using coupling in multistage transistor amplifiers is to transfer DC output of one stage to the input of the next .stage and to isolate the d.c. conditions of one stage from the next stage
Subject : Electronics Engineering Draw and explain a small signal high frequency CE model of a transistor.
a) Find the operating point current and voltage values of the non-linear element, in resistor R3 Calculate the voltage generated by the constant sources. b) Draw the circuit equivalent by linearizing the nonlinear element at the operating point. c) Using linearized equivalent small signal source j (t) to occur at R3 resistance calculate the voltage brought by it and give the expression of the VR3 voltage (constant sources and small sign sum of voltages generated by the source). E1=A=3 E2=B=8
Common Gate MOSFET Amplifier has Select one: a. input is connected to the Gate and the output is taken from the Source b. input is connected to the Source and the output is taken from the Drain c. input is connected to the Gate and the output is taken from the Drain d. input is connected to the Source and the output is taken from the Gate 55 week 10 material Jump to... CE255/EE255 (01)- 16
Design a voltage divider biased CE stage with emitter degeneration. That stage should support a voltage gain of 5 and an input impedance larger than 3 KOhms with a bias current of 0.5 mA. Assume Beta=100, Is = 5e-17. Neglect the early voltage effect. You also need to provide values for the operating point of this transistor. Find the output resistance of this stage if the early voltage = 20 V.
this question is analog electronics question
Which of the following is the basic feature of the emitter-connected amplifier circuit? I. It has voltage gain II. It has current gain III. There is a 180 degree phase difference between the input signal and the output signal
For the circuit given below, transistor parameters are given as -= 0.1mA/V², Vth,p=-1V, A=0. Using these information, a) Design the circuit (find the values of R1and R2) such that Ip=100HA. b) Find the small signal voltage gain Vo/Vi of the circuit. R1 10 V - R2 ww0-2.5 V
2) Consider an enhancement MOSFET common source amplifier circuit in Figure 2(a). The output characteristic is showed in Figure 2(b). Assume that the circuit is operating in the saturation region and k = 5 mA/V2. It also given that ra = ro = 00, Cgd = 2 pF, Cgs = 4 pF, Cas = 1 pF, Cwi = 4 pF and Cwo = 3pF. a. Using DC load line, prove that Ino = 22.5 mA and VpsQ = 5.5 V for Vaso = 2.5V. (Please attach the characteristic graph provided in your working solution) b. Draw the AC equivalent circuit at mid frequency. c. Estimate the voltage gain Av = Vo /Vi. d. Determine the dominant high cut – off frequency for the circuit. 10 V Rp 100 2 6 MQ C2 ci Rs RL Vo 1002 R: 5002 Rs Vo 14 MQ Cs 100 2 Vs Figure 2(a) 60- 50 30 20 10 9. 10 Figure 2(b) (yu) 4
The amplifier circuit below has a single ac input and two ac outputs. Assuming transistor parameters of B = 100 and Vu = 0.6 V: a) Detemine the Q point 5) Is the transistor in the active region? Explain thoroughly. c) Construct the T-model of the transistor with all parameters labelled and evaluated. Assume room temperature. d) Draw a complete small signal circuit model, then find the voltage gain for both outputs. e) Based on the analysis results, what is the function of this circuit? Suggest a proper application. 2) Assuming that cach output is feeding a 50-kN resistor, determine the total voltage gain and current gain for both outputs. Also, calculate the amplifier input resistance and the amplifier output resistances. 10 V 10 V Rc= 3.3 kl 100 kN 50 kΩ Rg = 3 kſl