1. a. What is the expected amplification of a BJT transistor amplifier if the de supply is set to zero volts? b. What will happen to the output ac signal if the de level is insufficient? Sketch the effect on the waveform. c. What is the conversion efficiency of an amplifier in which the effective value of the current through a 2.2-k2 load is 5 mA and the drain on the 18-V de supply is 3.8 mA?

1. a. What is the expected amplification of a BJT transistor amplifier if the de supply is set to zero volts? b. What will happen to the output ac signal if the de level is insufficient? Sketch the effect on the waveform. c. What is the conversion efficiency of an amplifier in which the effective value of the current through a 2.2-k2 load is 5 mA and the drain on the 18-V de supply is 3.8 mA?

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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The simple C-E amplifier shown is biased with VCE = VCC/2. Assume that the transistor can saturate with VCESAT = 0 V and still be operating linearly. What is the amplitude of the largest sine wave that can appear at the output? What is the ac signal power Pac being dissipated in the load resistor RL? What is the total dc power PS being supplied from the power supply? What is the efficiency ε of this amplifier if ε is defined as ε = 100% × Pac/PS?
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Enclosed please find an amplifier circuit designed with a BJT transistor. VCC = 9Volt for the circuit. All capacity values are selected sufficiently large. BJT Transistor B = 100 Vbe(on) = 0.8V, VA=100V, Vt= 26mV Vce (sat) = 0.15Volt. Calculate “Vceq” and “Icq “ values at the operating point of the circuit. In what area does this BJT transistor work in? Draw the small signal equivalent circuit of the circuit. Calculate the AC small signal current earnings of the circuit (Ai = I out / I input). Note: Is the current passes over Rs source resistance and The IO current passes over RL source resistance. Please Calculate Rin input resistance?
Consider a common-emitter BJT amplifier circuit in Figure 3. Assume that Bac = 100 remains constant during the operating conditions, ??′= 10Ω and RL = 500Ω. If RL is connected, evaluate the voltage gain of the amplifier before and after the bypass capacitor C2 is connected. How does the voltage gain change and verify your answer?
A common-source amplifier has a gain of 16 dB and is developing a 15-V peak-to-peak ac signal at its output. Is this amplifier operating within itssmall-signal region? Discuss.
There is a requirement to design a transistor amplifier circuit which gives a voltage amplification of 25dB. What are the further details that you as a designer require in order to complete the design process? If the input to the amplifier above is , what is the output? Sketch a suggested configuration for the amplifier circuit and plot both input and output signals on the same axes.
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In single transistor amplifier design, it is observed that the voltage gain will always decrease as the load resistance increases. True False The saturation region of MOSFET indicates that the drain current no longer depends on the source-drain voltage while the saturation region of BJT indicates that the collector current no longer depends on the collector-emitter voltage. True False A bipolar junction transistor can be connected to behave like a diode while a field effect transistor can not be connected to behave like a diode. True False A voltage follower circuit is usually designed to have the power gain slightly less than 1 with any passive load. True False A clipper circuit regulates DC voltage input while a clamp circuit regulates AC voltage input. True False
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