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LC-Tuned Circuits: Colpitts • This oscillator Example: A Colpitts Oscillator circuit having two (2) capacitors of 24 nF and 240 nF respectively are connected in parallel with an inductor of 10 mH. comes Vcc with a tank circuit in which an inductor L is connected in parallel to Determine the frequency of oscillations of the circuit, the feedback fraction, and draw the circuit. R1 Ro the serial combination of capacitors C1 and C2. C,C2 C, + C2 CC2 24 nF x 240 nF Ceff Ceff = 21.82 nF C + C2 24 nF + 240 nF 1 R2 RE Co f = 2n x LCeff 1 1 f = 2nLCeff 2n(10 mH)(21.82 nF) f = 10.77 kHz Tank Circuit

LC-Tuned Circuits: Colpitts • This oscillator Example: A Colpitts Oscillator circuit having two (2) capacitors of 24 nF and 240 nF respectively are connected in parallel with an inductor of 10 mH. comes Vcc with a tank circuit in which an inductor L is connected in parallel to Determine the frequency of oscillations of the circuit, the feedback fraction, and draw the circuit. R1 Ro the serial combination of capacitors C1 and C2. C,C2 C, + C2 CC2 24 nF x 240 nF Ceff Ceff = 21.82 nF C + C2 24 nF + 240 nF 1 R2 RE Co f = 2n x LCeff 1 1 f = 2nLCeff 2n(10 mH)(21.82 nF) f = 10.77 kHz Tank Circuit

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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Answer the following Draw, Illustrate and label your schematic diagram before solving the problem.

3. ) A Colpitts Oscillator circuit having two (2)  capacitors of 37 nF and 350 nF respectively are connected in parallel with an inductor of 30 mH. Determine the frequency of oscillations of the circuit, the feedback fraction and draw the circuit.

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LC-Tuned Circuits: Colpitts • This oscillator Example: A Colpitts Oscillator circuit having two (2) capacitors of 24 nF and 240 nF respectively are connected in parallel with an inductor of 10 mH. comes Vcc with a tank circuit in which an inductor L is connected in parallel to Determine the frequency of oscillations of the circuit, the feedback fraction, and draw the circuit. R1 Re the serial combination of capacitors C1 and C2. C,C2 C, + C2 Co CC2 24 nF x 240 nF Ceff Ceff = 21.82 nF C; C1 + C2 24 nF + 240 nF 1 RE Co f = 2n x LCeff 1 1 f = 2n LCeff 2n f = 10.77 kHz C2 (10 mH)(21.82 nF) Tank Circuit
Transcribed Image Text:LC-Tuned Circuits: Colpitts • This oscillator Example: A Colpitts Oscillator circuit having two (2) capacitors of 24 nF and 240 nF respectively are connected in parallel with an inductor of 10 mH. comes Vcc with a tank circuit in which an inductor L is connected in parallel to Determine the frequency of oscillations of the circuit, the feedback fraction, and draw the circuit. R1 Re the serial combination of capacitors C1 and C2. C,C2 C, + C2 Co CC2 24 nF x 240 nF Ceff Ceff = 21.82 nF C; C1 + C2 24 nF + 240 nF 1 RE Co f = 2n x LCeff 1 1 f = 2n LCeff 2n f = 10.77 kHz C2 (10 mH)(21.82 nF) Tank Circuit
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