Abstract
Processes in tuned oscillators are studied. It is stressed that those processes are complex and analytical approach to understanding them is time-consuming and not flexible enough. Computer simulation is put forward as a method alternative to the analytical one. An approach is proposed to the development of a computer simulation model of a tuned oscillator and a computer simulation model based on this approach is designed. The computer model development procedure in the first stage involves drawing a system of differential equations for the analyzed circuit, in the second – transformation of the differential equations into the ones of difference and in the final stage – presenting the equation of difference in Matlab programming environment. Designed computer model of the tuned oscillator has a number of varying parameters that increase its potential to analyze different modes of operation and regimes of the circuit. In this paper, dependencies of the currents and voltages in the input and output circuits of the oscillator upon the feedback factor are analyzed and the threshold value of this feedback factor is ascertained. Obtained results clearly indicate validity of the tuned oscillator model and its applicability and effectiveness for studying processes in such circuits. Designed model can be used for performing promising research or assessing efficiency of already designed oscillators in the field.