Double-simulation new quadrature sine oscillator – the “electronic quartz” [articol]

Abstract

The authors aim particularly, to signalize out the spectacular performances of this oscillator and to explain the occurring numerous theoretical and practical aspects. The new oscillator is made up of a resonant parallel LC circuit, including both simulated components, obtained with the help of operational amplifiers. Due to a variable resistance of the amplitude limiting device, the resonant circuit establishes itself automatically in an undamped regime, characterized by a quality factor Q = ∞. There are discussed the main equations giving the oscillation condition and frequency, the output voltage phase and amplitudes. This paper shows both the achieved simulations as well as the experiment results.