4. The transistor in the amplifier below has been biased such that IC -0.3mA (no need to do DC analysis).=10VBo+8mo C10ΚΩo Vo(a)- С10ΚΩẞ =100Bib83ΩRin(b)i) Find the small signal voltage gain (vo/vi) using the BJT smallsignal model shown in Fig. a)ii) Repeat with the model in Fig. b). Which do you prefer for thiscircuit?iii) What is the input resistance, Rin, of the amplifier? How does thisvalue compare with that of a MOSFET? What happens whenyou make the emitter resistance zero?

Answered: 4. The transistor in the amplifier…

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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on to Electronic Analysis and Design- CE255/EE255 - C courses / Introduction to Electronic Analysis and Design - CE255/EE255 - O1 - Spr The Common Emitter BJT Amplifier has Select one: a. Has a negative gain. b. The input impedance is always very low, whatever the design is. c. The output impedance is always very high, whatever the design is. d. Has a positive gain. e. The gain is always less than 1, whatever the design is. age ssessment CE255/EE255 (O1) - Dr. Mamoun Al-Mistar Jump to...
QUESTION 1 a) As an electronics engineer, you are given a task to design power amplifier using the Bipolar Junction Transistor (BJT). You are required to get the efficiency of the power amplifier up to 78.5%. Suggest the selected power amplifier's class and sketch the circuit. Discuss one problem that commonly arise with the selected power amplifier and propose the method to improve it. b) One of the commonly used model in small signal ac analysis of transistor network is re model. Explain the steps to obtain the ac equivalent network by sketching the appropriate circuit diagram.
b)The transistor consists of three terminals. The main reason for designing configurations is that it requires four terminals in order to provide the input and the output connections of the circuit for effective amplification. Now in your own words describe how Bipolar Transistors Transistor ( BJT ) various configurations are designed with relating diagrams. In your own estimation evalute which one is most widely used when looking at appreciable output for an amplifier?
Question 1 Which of the following statement regarding amplifiers is not correct? O Every amplifier has a dc load line and an ac load line. O For large-signal operation, the location of Q-point is not critical. O The ac-load line has a higher slope than dc load line. To get maximum peak-to- peak output, the Q point should be in the center of the ac load line.
It is connected to the input of a transistor (BJT) amplifier circuit with a gain of “-50” with a peak value of 100mV. a new year's eve a) Draw the circuit. b) Draw the inputs and outputs, in decline, one under the other.
Solve for the common base amplifier Given B= 100, Si=0.7 (voltage drop) Find a) Avs b) Ais c). What are Ac voltage at each point indicated (A,B,C,D,E) in the circuit with Vs = 100mVp-p
Hand Calculation: Since you now have the values of R1 and R2 resistors, obtain numeric value of voltage gain Av=Vo/Vi, and numerical values of input and output resistances Ri and Ro. Note that you need to DC analysis first. Do a hand calculation and calculate the DC collector current or IC. This is needed in order to calculate the small signal parameters gm and rπ and in turn to obtain the Av , Ri and Ro Hence, first perform a DC analysis (use the circuit in Figure 1 and take all capacitors open) and assume your transistor has a β=140.
Vo 7) Consider the multi-stage amplifier shown below with its corresponding small signal model. Using the provided small signal model, perform small signal analysis to determine expressions the you would need to determine Av Vin Do NOT solve for Av, just provide the expressions that you would need to determine Av. Write your answer's and show your work! Do NOT make any approximations. Vin Vcc Rd1 M1 Vo1 Vin 2 quot + Vgs gm1 Vgs ro1 Vo1 Vcc WWW www. Rd1 Rc2 Q2 Re2 Vo + 4 Vbe rл2 gm2 Vbe Re2 ro2 Vo Rc2
A sinusoid with a peak value of 100mV is applied to the input of a transistor (BJT) amplifier circuit with a gain of “-50” .A)Draw the circuit. B)Underline the input and output voltages by specifying their values.
amplifier has a gain of unity andVcc= 25Vdc, RL= 8Ω and Vi(p-p)= 34V.a. Calculate the input power, the output powerand the efficiency of the amplifier.b. Consider the operation mode that the two output transistors dissipate the maximum power. For this operation mode, find the output voltage across the load and the power dissipated by each transistor.
Consider the amplifier shown. Draw the corresponding small signal model. ● Label Vin and Vo. ● Vin Do NOT make any approximations. Vcc WWW W R1 R2 Vcc W M2 Q1 Vcc 1: Idc Vo
7) Consider the multi-stage amplifier shown below with its corresponding small signal model. Using the provided small Vo Vin signal model, perform small signal analysis to determine expressions the you would need to determine Av Do NOT solve for Av, just provide the expressions that you would need to determine Av. Show your work! Do NOT make any approximations. Vin + Vgs Vin Vcc Rd1 M1 gm 1 Vgs ro1 Vo1 Vo1 Vcc ww ww1. Rd1 Rc2 Q2 Re2 + Vbe rπ2 Vo www. gm2 Vbe Re2 WWW ro2 ww - Vo Rc2

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