Lecture
This lecture covers the fundamental principles of oscillators, focusing on signal generators, OPAMP RC oscillator circuits, and multivibrators. It explains the importance of generating standard waveforms for various electronic systems, the history behind oscillator circuits, and the conditions required for sustained oscillations. The lecture also delves into the analysis of oscillator circuits, including the loop gain, characteristic equation, and frequency stability. Additionally, it explores the Barkhausen oscillation criterion, oscillator frequency stability, and nonlinear amplitude control methods. The presentation concludes with a detailed explanation of the phase-shift oscillator and the operation of astable multivibrators.