Parametric generation in an oscillatory loop with discontinuously changing parameters

The conditions of parametric excitation of oscillations in a loop with discontinuously changing parameters determining the relations between the durations of residence of the loop in discrete states and the parameter values in these states are described. It is shown that such a loop has a set of excitation modes of oscillations of different form. The results of experimental investigation of the balance parametric loop with discontinuously changing capacitance, in which 16 generation regions were observed, are presented.