Microelectronic Circuits (The Oxford Series in Electrical and Computer Engineering) 7th edition
7th Edition
ISBN: 9780199339136
Author: Adel S. Sedra, Kenneth C. Smith
Publisher: Oxford University Press
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Chapter 7.4, Problem D7.35E
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To design: The given circuit in order to establish a dc emitter current of 1 mA and provide the highest voltage gain by allowing a signal to swing at the collector of
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The fixed bias circuit shown in figure uses a silicon transistor with VBE = 0.7V. Find the collector current, IC (if β of transistor is 60)
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?
The fixed bias circuit shown in figure uses a silicon transistor with VBE = 0.7V. Find the VCE. (if β of transistor is 60) *
Chapter 7 Solutions
Microelectronic Circuits (The Oxford Series in Electrical and Computer Engineering) 7th edition
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- A particular transistor has a power rating at 25°C of 200 mW, and a maximum junction temperature of 150°C. What is its thermal resistance? What is its power rating when operated at an ambient temperature of 70°C? What is the junction temperature when dissipating 100 mW at an ambient temperature of 50°C?arrow_forwardConsider the common-base BJT amplifier in Figure 7. Assume that the following values remain constant during the operating conditions, B DC=100, and VBE = 0.5V, Draw the dc equivalent circuit for the BJT amplifier circuit, and calculate the following dc values for the amplifier:i. VB ii. VE iii. IE iv. ICv. IB vi. VCarrow_forwardDraw ac equivalent circuits for the following amplifiers. Each circuit should include resistancesand one dependent voltage or current source. a) Common Drain b) Common Emitter with single emitter resistance RE c) Common Gate d) Common Source with RSAC and RSDCarrow_forward
- Using DC analysis, find emitter current Ie in this circuit.arrow_forwardConsider the common-base BJT amplifier in Figure 7. Assume that the following valuesremain constant during the operating conditions, B AC= 110 and VBE = 0.5V, Draw the ac equivalent circuit for the BJT amplifier circuit, and calculate the following ac values for the amplifier:i. R outii. R in(emitter) iii. Av iv. Ai v. Aparrow_forwardFor the circuit given in the figure below β=75. Calculate the value of VI that produces VO equal to 4 Vfor f-) Voltage VCE.g-) Propose a method to drive the transistor into saturation.arrow_forward
- Discussion Theoretically, find the values of input resistance and output resistance of common emitter transistor according to the setup that you have used during the procedures' steps. Compare between theoretical and practical results.arrow_forwardA transistor employ a 8 k load and Vcc = 17V. What is the maximum input signal if 3 = 50.Given that knee voltage= 1V and a change of 1 Voltin VÂÊ causes a change of 10 mA in collector currentarrow_forwardMost of the following statements about integrated circuits arecorrect, but one is not. Which statement is NOT true? Select one: a. Transistors are constructed in a small area of an integrated circuit,and are connected to other transistors by wires that are embedded inthe integrated circuit b. Wires that carry signals may be embedded in a substrate without a shortcircuit because a short circuit would require a signal to cross areverse biased junction c. Each transistor on an integrated circuit is manufactured individually,one at a time d. An integrated circuit contains several layersarrow_forward
- 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 Falsearrow_forwardThe steady state operation of a transistor depends a great deal on its base current, collector voltage, and collector current values and therefore, if the transistor is to operate correctly as a linear amplifier, it must be properly biased. In your level of understanding, explain how important biasing transistor in a given working electronic Circuit is. Explain also the consequence when such transistor does not biases properlyarrow_forwardThe Darlington Transistor named after its inventor, Sidney Darlington, is a special arrangement of two standard NPN or PNP bipolar junction transistors (BJT) connected together as shown below. The Emitter of one transistor is connected to the Base of the other to produce a more sensitive transistor with a much larger current gain being useful in applications where current amplification or switching is required. Connect two NPN transistors to form a Darlington pair and plot the Gummel characteristics. Show that B at any Vag is multiplication of ßs of the individual transistors. Colector Base O TR: TR: NPN Emitterarrow_forward
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