Function Generator and Oscillator

This lecture covers the operation of autonomous circuits used to generate periodic signals, such as signal generators, astable flip-flops, and oscillators. The amplitude and frequency of the signal are determined internally. Astable flip-flops exhibit strong positive feedback, switching between two output states periodically. The implementation of astable flip-flops is demonstrated, emphasizing the role of resistors and capacitors. The lecture also explores the principles behind oscillators, which are amplifiers looped for feedback. The conditions for oscillation and the Barkhausen criterion are discussed, highlighting the importance of frequency selectors. Various circuit implementations, including triangle and square wave generators, comparators, and integrators, are presented.