A SPICE model for electroluminescent foils

Electroluminescent lamps are used today as backlight for displays, inclusive in luxury cars or can be used for different type of signaling in airplanes or in advertising industry. One of the drawbacks of them, beside the limited lifetime and poor light efficiency is the special power supply circuit that is necessary to drive the lamps. In order to make advantage of simulation tools for inverters design a SPICE like model is very useful. In this work we have tried to develop a “natural” electric model based on EL construction and on experimental investigations.