A simplified explanation of the automatic temperature stabilization of a nonlinear dielectric element is presented. The explanation is based on energy considerations of the heat produced in consequence of dielectric losses in the element and of heat transferred to the ambient medium. The principle of bringing the element into the autostabilizing state is discussed in detail, as well as the falling out of this state, and the nature of temperature hysteresis of this element is explained. Measurements of complex permittivity at the fundamental frequency and high amplitudes of applied voltage as functions of crystal temperature are given for various values of the heating voltage. From these experimental results the temperature stabilization of the element is calculated for its dependence on variations of ambient temperature and heating voltage; a good agreement was found with the experimental values previously reported. The principle of automatic stabilization of temperature is not limited to the TANDEL produced from a triglycine sulfate single crystal but can be realized with some other materials having a decreasing dependence of &egr;″ on the temperature.