Feedback Electronics
Syllabus
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Lesson I: Feedback in Electronics.
I.1. The ideal feedback amplifier.
I.2. Amplifier types and Feedback Configurations.
I.3. Real Amplifiers and Feedback. Loading effects.
I.4. Feedback configuration examples.
Lesson II: Stability on feedback circuits.
II.1. Effect of feedback on the freqency response
Single pole circuits.
Two pole circuits.
Multiple poles.
II.2. Loop gain and stability.
II.3. Stability Criteria
Loop gain and the Nyquist diagram. Nyquist Criteria.
Loop gain and Bode Plot. Gain and Phase Margins.
II.4 Compensation.
Goal of compensation
Slew Rate
Lesson III: Oscillators.
III.1 Introduction.
III.2 Linear Oscillators
Building Blocks of a linear oscillator and their role.
Barkhausen criteria for oscillation.
Phase condition, and oscillation frequency.
Gain condition, and sustainment of oscillation and turn-on.
III.3 RC Oscillators.
Wien Bridge
Phase Shift
III.4 Tuned oscillators.
General description.
LC oscillators: Hartley, Colpitts y Clapp.
Crystal oscillators.