Microelectronics: Circuit Analysis and Design
4th Edition
ISBN: 9780073380643
Author: Donald A. Neamen
Publisher: McGraw-Hill Companies, The
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Chapter 8, Problem 8.2EP
(a)
To determine
The temperature of the device.
(b)
To determine
The temperature of the case.
(c)
To determine
The temperature of the heat sink.
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FOLLOW UP QUESTIONS: BIPOLAR JUNCTION TRANSISTOR (BJT)
SOLVE FOR:
a.) VCE (off)
CONSTRUCT A DC LINE SHOWING THE VALUES OF
b.) IC (sat)
c.) VCE (off)
d.) ICQ
e.) VCEQ
For the given circuit and the input waveform, answer the following questions:
1) Calculate the saturation current IC(sat). Then, for each time period of Vin waveform, calculate the value of VCE and determine the state of the transistor. Assume that: VCC = 12 V, RB = 5 kΩ, RC = 600 Ω, and VCE (sat) = 0.2 V.
2) Given that Vin = 2 V, and the transistor datasheet gives the following maximum ratings: PD(max) = 280 mW, VCE(max) =10 V, and IC(max) = 100 mA. Determine the maximum value to which VCC can be adjusted without exceeding a rating. Which rating will be exceeded first? Explain your answer.
Ex. 1632. A 120VAC_RMS, 60Hz line is connected to an SCR with a firing angle of 70 degrees. What is the RMS voltage at the SCR output? Can you accurately plot the SCR-output voltage? ans:1
Chapter 8 Solutions
Microelectronics: Circuit Analysis and Design
Ch. 8 - Prob. 8.1EPCh. 8 - Prob. 8.2EPCh. 8 - Prob. 8.3EPCh. 8 - Prob. 8.1TYUCh. 8 - Prob. 8.2TYUCh. 8 - Prob. 8.3TYUCh. 8 - Prob. 8.4EPCh. 8 - Prob. 8.5EPCh. 8 - Prob. 8.7EPCh. 8 - Prob. 8.4TYU
Ch. 8 - Prob. 8.5TYUCh. 8 - Prob. 8.6TYUCh. 8 - A transformercoupled emitterfollower amplifier is...Ch. 8 - Prob. 8.7TYUCh. 8 - Prob. 8.9EPCh. 8 - Prob. 8.11EPCh. 8 - Consider the classAB output stage shown in Figure...Ch. 8 - From Figure 8.36, show that the overall current...Ch. 8 - Prob. 1RQCh. 8 - Describe the safe operating area for a transistor.Ch. 8 - Why is an interdigitated structure typically used...Ch. 8 - Discuss the role of thermal resistance between...Ch. 8 - Define and describe the power derating curve for a...Ch. 8 - Define power conversion efficiency for an output...Ch. 8 - Prob. 7RQCh. 8 - Describe the operation of an ideal classB output...Ch. 8 - Discuss crossover distortion.Ch. 8 - What is meant by harmonic distortion?Ch. 8 - Describe the operation of a classAB output stage...Ch. 8 - Describe the operation of a transformercoupled...Ch. 8 - Prob. 13RQCh. 8 - Sketch a classAB complementary MOSFET pushpull...Ch. 8 - What are the advantages of a Darlington pair...Ch. 8 - Sketch a twotransistor configuration using npn and...Ch. 8 - Prob. 8.1PCh. 8 - Prob. 8.2PCh. 8 - Prob. 8.3PCh. 8 - Prob. 8.4PCh. 8 - Prob. 8.5PCh. 8 - Prob. D8.6PCh. 8 - A particular transistor is rated for a maximum...Ch. 8 - Prob. 8.8PCh. 8 - For a power MOSFET, devcase=1.5C/W , snkamb=2.8C/W...Ch. 8 - Prob. 8.10PCh. 8 - The quiescent collector current in a BiT is ICQ=3A...Ch. 8 - Prob. 8.12PCh. 8 - Prob. 8.13PCh. 8 - Prob. 8.14PCh. 8 - Prob. 8.15PCh. 8 - Prob. 8.16PCh. 8 - Consider the classA sourcefollower circuit shown...Ch. 8 - Prob. 8.18PCh. 8 - Prob. 8.19PCh. 8 - Prob. 8.20PCh. 8 - Prob. 8.21PCh. 8 - Consider an idealized classB output stage shown in...Ch. 8 - Consider an idealized classB output stage shown in...Ch. 8 - Prob. 8.24PCh. 8 - For the classB output stage shown in Figure P8.24,...Ch. 8 - Prob. 8.26PCh. 8 - Prob. 8.27PCh. 8 - Consider the classAB output stage in Figure P8.28....Ch. 8 - Prob. 8.29PCh. 8 - Prob. D8.30PCh. 8 - Prob. 8.31PCh. 8 - Prob. D8.32PCh. 8 - Consider the transformercoupled commonemitter...Ch. 8 - The parameters for the transformercoupled...Ch. 8 - A BJT emitter follower is coupled to a load with...Ch. 8 - Consider the transformercoupled emitter follower...Ch. 8 - A classA transformer-coupled emitter follower must...Ch. 8 - Repeat Problem 8.36 if the primary side of the...Ch. 8 - Consider the circuit in Figure 8.31. The circuit...Ch. 8 - Prob. D8.40PCh. 8 - The value of IBiass in the circuit shown in Figure...Ch. 8 - The transistors in the output stage in Figure 8.34...Ch. 8 - Consider the circuit in Figure 8.34. The supply...Ch. 8 - Prob. 8.44PCh. 8 - Prob. 8.45PCh. 8 - Consider the classAB MOSFET output stage shown in...Ch. 8 - Prob. 8.47PCh. 8 - Consider the classAB output stage in Figure P8.48....Ch. 8 - For the classAB output stage in Figure 8.36, the...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- FOLLOW UP QUESTIONS: BIPOLAR JUNCTION TRANSISTOR (BJT) SOLVE FOR a.) IC(sat) b.) VCE(off) CONSTRUCT A DC LOAD LINE SHOWING THE VALUES: c.) IC (sat) d.) VCE (off) e.) ICQ f.) VCEQarrow_forwardIn a common emitter bjt amplifier circuit, what parameter is described by Bre. Choices: Diode Transistor input impedance output impedance gainarrow_forwardThe outer surface of a transistor is cooled convectively by a fan-induced flow of air ata temperature of 25 °C and a pressure of 1 atm. The transistor’s outer surface area is 5x 10 -4 m 2 . At steady state, the electrical power to the transistor is 3 W. Negligible heattransfer occurs through the base of the transistor. The convective heat transfercoefficient is 100 W/m 2 K.Determinei. the rate of heat transferbetween the transistor and theair, in Wii. the temperature at thetransistor’s outer surface, in °C.arrow_forward
- Answer all subparts In the circuit below the LED emits a sufficient light when saturated. Given that: VCC = 10 V, RC = 200 Ω, RB = 3.9 kΩ, βDC = 60, VCE (sat) = 0.2 V and VLED = 1.3 V. - Determine the minimum value of base current. - Determine the amplitude of the input voltage necessary to saturate the transistor. Use double the minimum value of base current as a safety margin to ensure saturation. - Determine the amplitude of the input voltage necessary to cut-off the transistor. - What is the main application when the transistor operation between cut-off and saturation?arrow_forward1) Find the operating point of the transistor by drawing the load line of the BJT transistor circuit given below. Calculate the voltage values VE and VC. (β = 100, VBE = 0.7 V, R1 = 10 KΩ, RC = 4.7 KΩ, RE = 3.3 KΩ, VCC = 10 V, VEE = - 4 V)arrow_forwardUsing the circuit. a.) If input VI 1 Vrms at 1 KHz, will the output, Vo, clip or maintain signal fidelity? b.) If input Vi = 1 Vrms at 1 KHz, what is the phase difference between Vi and Vo?arrow_forward
- In the given emitter-stabilized bias configuration, determine: IE VCE re Zi Zo Zos Avmid Avs fCS fCC fCE f1 fci fco f2 BWarrow_forwardIn order to express the effect of the internal capacitors of BJT and the high frequency reception, the current gain expression depending on the frequency (Figure b) (hfe) is used in the case of collector emitter short circuit, voltage source connected at base end and emitter grounded (Figure la).. The catalog information of the 2N2222 transistor is given in Figure Ic. In the catalogue, when Ic=20 mA, it is seen as fT=250 MHz. a) Find the total capacitor effect for the case where gm> > wCμ. (Cpi) + (Cμ) = ?pFarrow_forward1. one of the three terminals of a FET analogous to the base of BJT IS _______arrow_forward
- Figure 2 shows a typical BJT amplifier, with its parasitic capacitances displayed. The current gain of the transistor is B=150 and the voltage gain of the amplifier is Am =-125. The small signal resistances of the transistor are re =16 ohm and r0 = infinity, respectively. The values of resistors and capacitors in the figure are: R1 =80 kohm, R2 =20 Kohm, Rc = 2 Kohm, RE = 2 Kohm, Rs =50 W, RI=5 kohm, Cs=2 uF, Cc=2 uF, Ce =10 uF, Cbc =4 pF, Cbe = 10 pF, Cce =1 pF, Cwi = 4 pF, CWO = 9 pF, and Vcc = 20 V. a) Sketch a simplified circuit diagram of Figure 2 for high frequency analysis. b) Using the concept of "Miller effect capacitance", calculate the input and Output Miller effect capacitances of Figure 2, respectively. C) Determine the upper cut-off frequency of Figure 2 that is imposed by its input network only. d) Explain briefly the possible ways to increase the upper cut-off frequencv of this amplifier.arrow_forwardThe LED in Figure below requires 30 mA to emit a sufficient level of light. Therefore, the collector current should be approximately 30 mA. For the following circuit values, determine the amplitude of the square wave input voltage necessary to make sure that the transistor saturates. Use double the minimum value of base current as a safety margin to ensure saturation. VCC = 8 V, VCE(sat) = 0.3 V, RC = 200 Ω , RB = 3.3 kΩ , b (beta) = 45, and VLED = 1.6 V.arrow_forwardif the parameters for the BJT given Beta=120, VBE=0.7V, VT=26mV, VA=infinityarrow_forward
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