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The chapter focuses on the feedback systems within analog electronic circuits, explaining the fundamental concepts, types of feedback systems, and their configurations. It details the mechanics of feedback in amplifiers, including the derivation of transfer characteristics and feedback types, such as negative and positive feedback. Furthermore, it discusses the implications of feedback on system performance and stability.
References
Lecture 90 Part A.pdfClass Notes
Memorization
What we have learnt
Final Test
Revision Tests
Term: Feedback System
Definition: A feedback system is a network that takes a portion of the output and feeds it back to the input to improve stability and performance.
Term: Negative Feedback
Definition: Negative feedback is a process where the feedback signal opposes the input signal, reducing the overall gain and improving stability.
Term: Positive Feedback
Definition: Positive feedback is a process where the feedback signal reinforces the input signal, potentially increasing the gain and leading to instability.
Term: Transfer Characteristic
Definition: The transfer characteristic is a relationship that describes how the output of a system changes in relation to its input, especially in feedback configurations.
Term: Desensitization Factor
Definition: The desensitization factor is a measure of how feedback impacts the sensitivity of the system's gain, effectively reducing the variation of the output gain relative to input fluctuations.