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Q.2/ Find the value of R2 in figure below so that the circuit will oscillate.

Q.2/ Find the value of R2 in figure below so that the circuit will oscillate.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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  • Q.2/ Find the value of R2 in figure below so that the circuit will oscillate.
  • Q.3/ For the circuit shown below, find Rf if rds for the JFET is 350 ohms when oscillation is
    stable.
  • Q.4/ Find Rf and fr:
  • Q.5/ How to change the frequency of oscillation of the following circuit to 10kHz?
  • Q.6/ Modify the sawtooth generator in figure below so that its peak-to-peak output is 4V. Is it a
    VCO?
  • Q.7/ To what value must Cext be changed in figure below to achieve a frequency of 25kHz?What is the benefit of C1? Can be neglected?
  • Q.8/ What is the crystal oscillator? Explain its principle of operation. Explain how to connect a
    crystal with frequency of 10MHz to a microcontroller?
Q.2/ Find the value of R2 in figure below so that the circuit will oscillate. D D2 6.8 V 6.8 V R3 R 47 k 100 kf2 R. 0.015 µF 1.0 kN Rs 1.0 kf 0.015 µF 0.3/ For the circuit shown below, find Rf if rds for the JFET is 350 ohms when oscillation is stable. R 10 kf. 0.015 µF R >1.0 kf Vour - D IN914 2N5458 1.0 kf "0.015 µF R 820 2 1.0 µF 10 kf. Q.4/ Find Rf and fr: R R, 4.7 k 0.022 μF 0.022 μ | 0022 μF | 4.7 kfN 4.7 kl Q.5/ How to change the frequency of oscillation of the following circuit to 10kHz? R 0.022 uF 22 k 56 kf Ry 18 kl
Transcribed Image Text:Q.2/ Find the value of R2 in figure below so that the circuit will oscillate. D D2 6.8 V 6.8 V R3 R 47 k 100 kf2 R. 0.015 µF 1.0 kN Rs 1.0 kf 0.015 µF 0.3/ For the circuit shown below, find Rf if rds for the JFET is 350 ohms when oscillation is stable. R 10 kf. 0.015 µF R >1.0 kf Vour - D IN914 2N5458 1.0 kf "0.015 µF R 820 2 1.0 µF 10 kf. Q.4/ Find Rf and fr: R R, 4.7 k 0.022 μF 0.022 μ | 0022 μF | 4.7 kfN 4.7 kl Q.5/ How to change the frequency of oscillation of the following circuit to 10kHz? R 0.022 uF 22 k 56 kf Ry 18 kl
Q.6/ Modify the sawtooth generator in figure below so that its peak-to-peak output is 4V. Is it a VCO? +12 V 100 kf 47 kf -12 V R 100 ki 0.0022 uF R 100 k R2 22 ki Q.7/ To what value must Cext be changed in figure below to achieve a frequency of 25kHz? +5.5 V 1.0 k RESET Vcc DISCH 555 R2 3.3 k. THRESH OUT TRIG CONT Ceu F0.047 uF GND =0,01 µF What is the benefit of C1? Can be neglected? Q.8/ What is the crystal oscillator? Explain its principle of operation. Explain how to connect a crystal with frequency of 10MHZ to a microcontroller? Best Wishes Dr. Ali A. Abed, 2021
Transcribed Image Text:Q.6/ Modify the sawtooth generator in figure below so that its peak-to-peak output is 4V. Is it a VCO? +12 V 100 kf 47 kf -12 V R 100 ki 0.0022 uF R 100 k R2 22 ki Q.7/ To what value must Cext be changed in figure below to achieve a frequency of 25kHz? +5.5 V 1.0 k RESET Vcc DISCH 555 R2 3.3 k. THRESH OUT TRIG CONT Ceu F0.047 uF GND =0,01 µF What is the benefit of C1? Can be neglected? Q.8/ What is the crystal oscillator? Explain its principle of operation. Explain how to connect a crystal with frequency of 10MHZ to a microcontroller? Best Wishes Dr. Ali A. Abed, 2021
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