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Knowledge
The chapter explores negative feedback systems in electronic circuits, emphasizing their impact on input and output resistance. It discusses both ideal and practical scenarios of feedback configurations, including voltage and current amplifiers. Key insights include the desensitization factor and how feedback affects circuit performance.
Sections
References
Lecture 92 Part A.pdfClass Notes
Memorization
What we have learnt
- Negative feedback systems c...
- Desensitization factors pla...
- Various feedback configurat...
Final Test
Revision Tests
What we have learnt
- Negative feedback systems can significantly alter input and output resistance.
- Desensitization factors play a crucial role in the behavior of feedback networks.
- Various feedback configurations lead to different input and output resistance characteristics.
Key Concepts
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Term: Negative Feedback
Definition: A process where a portion of the output is returned to the input to reduce overall gain, improving stability and bandwidth.
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Term: Input Resistance
Definition: The resistance facing the input signal of a network or amplifier, which can be modified by feedback.
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Term: Desensitization Factor
Definition: A ratio that describes how much feedback reduces the sensitivity of a circuit to changes in gain or load conditions.
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Term: Voltage Amplifier
Definition: An amplifier that increases the voltage of a signal while preserving its waveform.
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Term: Current Amplifier
Definition: An amplifier that increases the current of a signal while maintaining fidelity to the input signal.