In this article the problem of modelling a switching process of Insulated Gate Bipolar Transistors (IGBTs) in the SPICE software is considered. The new form of the considered transistor model is presented. The model includes controlled voltage and current sources. resistors and voltage sources. https://iriaayra6xkht.blog2freedom.com/34914237/routing-with-renewable-energy-management-in-wireless-sensor-networks