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Hartley oscillator uses which type of feedback
- a)Negative feedback
- b)Positive feedback
- c)No feedback
- d)Positive or Negative depends upon frequency
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Hartley oscillator uses which type of feedbacka)Negative feedbackb)Pos...
As normal oscillators Hartley oscillator also uses positive feedback for sustained oscillation.
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Hartley oscillator uses which type of feedbacka)Negative feedbackb)Pos...
Overview:
Hartley oscillator is a type of LC oscillator used to produce sinusoidal oscillations at radio frequencies. It uses positive feedback to sustain oscillations.
Feedback Type:
Hartley oscillator uses positive feedback to generate and sustain oscillations. The feedback is achieved by connecting a portion of the output signal back to the input in phase with the input signal.
Frequency Dependency:
The type of feedback in a Hartley oscillator depends on the operating frequency. At low frequencies, the phase shift in the feedback network is positive, leading to positive feedback. At high frequencies, the phase shift becomes negative, resulting in negative feedback.
Frequency Range:
In the Hartley oscillator, the frequency range where positive feedback dominates is typically lower than the frequency range where negative feedback dominates. This transition between positive and negative feedback occurs at the frequency where the phase shift of the feedback network changes from 0° to 180°.
Conclusion:
In conclusion, the feedback type in a Hartley oscillator is dependent on the operating frequency. At low frequencies, it exhibits positive feedback, while at high frequencies, it switches to negative feedback. This characteristic allows the oscillator to operate efficiently over a wide frequency range.
Hartley oscillator is a type of LC oscillator used to produce sinusoidal oscillations at radio frequencies. It uses positive feedback to sustain oscillations.
Feedback Type:
Hartley oscillator uses positive feedback to generate and sustain oscillations. The feedback is achieved by connecting a portion of the output signal back to the input in phase with the input signal.
Frequency Dependency:
The type of feedback in a Hartley oscillator depends on the operating frequency. At low frequencies, the phase shift in the feedback network is positive, leading to positive feedback. At high frequencies, the phase shift becomes negative, resulting in negative feedback.
Frequency Range:
In the Hartley oscillator, the frequency range where positive feedback dominates is typically lower than the frequency range where negative feedback dominates. This transition between positive and negative feedback occurs at the frequency where the phase shift of the feedback network changes from 0° to 180°.
Conclusion:
In conclusion, the feedback type in a Hartley oscillator is dependent on the operating frequency. At low frequencies, it exhibits positive feedback, while at high frequencies, it switches to negative feedback. This characteristic allows the oscillator to operate efficiently over a wide frequency range.
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Hartley oscillator uses which type of feedbacka)Negative feedbackb)Positive feedbackc)No feedbackd)Positive or Negative depends upon frequencyCorrect answer is option 'D'. Can you explain this answer?
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