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1. What parts of the varactor act as the plates of a capacitor?

1. What parts of the varactor act as the plates of a capacitor?

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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What parts of the varactor act as the plates of a capacitor? How does capacitance vary with applied voltage? Do varactors operate with forward or reverse bias? What is the main reason why LC oscillators are not used in transmitters today? Can the most widely used type of carrier oscillator be frequency-modulated by a varactor? What is the main advantage of using a phase modulator rather than a direct frequency modulator? What is the term for frequency modulation produced by PM? What is the most basic FM detector circuit? What circuit compensates for the greater frequency deviation at the higher modulating signal frequencies? What two IC demodulators use the concept of averaging pulses in a low-pass filter to recover the original modulating signal? Which is probably the best FM demodulator of all those discussed in this module? What is a capture range? What is a lock range? What frequency does the VCO assume when the input is outside the capture range? What type of circuit does a PLL look like over its lock range? Name at least six types of FM demodulators. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.
Transcribed Image Text:What parts of the varactor act as the plates of a capacitor? How does capacitance vary with applied voltage? Do varactors operate with forward or reverse bias? What is the main reason why LC oscillators are not used in transmitters today? Can the most widely used type of carrier oscillator be frequency-modulated by a varactor? What is the main advantage of using a phase modulator rather than a direct frequency modulator? What is the term for frequency modulation produced by PM? What is the most basic FM detector circuit? What circuit compensates for the greater frequency deviation at the higher modulating signal frequencies? What two IC demodulators use the concept of averaging pulses in a low-pass filter to recover the original modulating signal? Which is probably the best FM demodulator of all those discussed in this module? What is a capture range? What is a lock range? What frequency does the VCO assume when the input is outside the capture range? What type of circuit does a PLL look like over its lock range? Name at least six types of FM demodulators. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.
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