Description: Substantiale influence on work of all sources of light, including to work of light-emitting diodes, matters, as tension such index of quality of electric energy. Absence of methods on research of influence of tension on workings descriptions of light-emitting diodes and on diminishing of negative influence predetermines infrequent application of light-emitting diodes in the modern systems of illumination. Exactly by it and a necessity is caused for the estimation of influence of tension on work of light-emitting diodes and stabilizing of rejections of tension. The decision of this task will allow to increase the level of the use of light-emitting diodes in the systems of illumination, and, as a result, to reduce the consumption of electric power. The decision of this task will allow to increase the level of the use of lightemitting diodes in the systems of illumination, and, as a result, to reduce the consumption of electric power. In this article will consider the question of the use of the power in the light-emitting-diode modules, the purpose of which is stabilizing of tension, modules, and also will offer the mathematical model of stabilizing of tension for light-emitting diodes.
Keywords: light-emitting diode, tension, power module, stabilizing of tension, criterion of optimization of tension