  We implement a capacitorless model of a VO2 oscillator by introducing into
the circuit of a field-effect transistor and a VO2 thermal sensor, which
provide negative current feedback with a time delay. We compare the dynamics of
current and voltage oscillations on a switch in a circuit with a capacitor and
without a capacitor. The oscillation period in the capacitorless model is
controlled in a narrow range by changing the distance between the switch and
the sensor. The capacitorless model provides the possibility of significant
miniaturization of the oscillator circuit, and it is important for the
implementation of large arrays of oscillators in oscillatory neural networks to
solve the problem of classification and pattern recognition.
