Lecture

Feedback and Stability

Description

This lecture covers the principles of feedback in analog circuits, focusing on negative feedback. It explains how negative feedback is used in amplifiers to desensitize gain, reduce distortion, control noise, and extend bandwidth. The lecture also delves into the general feedback structure, closed-loop gain, loop gain, and the impact of feedback on amplifier stability. Various feedback amplifier configurations are discussed, such as the series-shunt feedback topology. The systematic analysis of feedback voltage amplifiers is presented, including the calculation of loop gain, input/output resistances, and closed-loop gain. Examples of noninverting and inverting amplifiers are provided to illustrate the application of feedback in circuit design.

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