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Which configuration of transistor amplifier is used for Colpitts oscillator?
- a)Common emitter amplifier
- b)Common collector amplifier
- c)Common base amplifier
- d)Combination of both common emitter and common collector
Correct answer is option 'A'. Can you explain this answer?
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Which configuration of transistor amplifier is used for Colpitts oscil...
Ans.
Option (a)
Common emitter configuration is used for amplifying distorted oscillatory signal to a perfect oscillation. The transistor provides a 180� phase shift and tank circuit another 180�, a total of 0 phase shift.
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Which configuration of transistor amplifier is used for Colpitts oscil...
Understanding the Colpitts Oscillator
The Colpitts oscillator is a type of electronic oscillator that generates sinusoidal waveforms. It is commonly used in various applications like RF signal generation and audio frequency generation.
Transistor Configuration
The most suitable configuration for a Colpitts oscillator is the Common Emitter Amplifier. Here’s why:
Conclusion
In summary, the common emitter amplifier is favored in Colpitts oscillator designs due to its high gain, appropriate phase shift, impedance characteristics, and stability. This makes it a fundamental choice for effective oscillation and signal generation in various electronic applications.
The Colpitts oscillator is a type of electronic oscillator that generates sinusoidal waveforms. It is commonly used in various applications like RF signal generation and audio frequency generation.
Transistor Configuration
The most suitable configuration for a Colpitts oscillator is the Common Emitter Amplifier. Here’s why:
- Gain and Feedback: The common emitter configuration provides high voltage gain, which is essential for sustaining oscillations in the circuit. The feedback network in a Colpitts oscillator relies on the amplifier's ability to amplify the signal effectively.
- Phase Shift: In a Colpitts oscillator, the required phase shift for oscillation is achieved naturally in the common emitter configuration. The output is 180 degrees out of phase, which aligns with the feedback requirements for oscillation.
- Impedance Matching: The common emitter configuration has a moderate input and output impedance, making it suitable for interfacing with other components in the oscillator circuit.
- Stability: The common emitter amplifier offers good frequency stability, which is crucial for maintaining the oscillation frequency set by the LC tank circuit in the Colpitts oscillator.
Conclusion
In summary, the common emitter amplifier is favored in Colpitts oscillator designs due to its high gain, appropriate phase shift, impedance characteristics, and stability. This makes it a fundamental choice for effective oscillation and signal generation in various electronic applications.
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Which configuration of transistor amplifier is used for Colpitts oscillator?a)Common emitter amplifierb)Common collector amplifierc)Common base amplifierd)Combination of both common emitter and common collectorCorrect answer is option 'A'. Can you explain this answer?
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