LED driver Folnet PS

An electroluminescence lamp is basically a light emitting capacitor. It works as a multilayer capacitor with pigment and the isolation as dielectric material. So, connected to a suitable inverter, its load is mainly capacitive. Driving Voltage / Operating Voltage The crystals in the pigment layer start emitting light at about 20VAC. This is the minimum voltage at which the field strength is high enough to excite electrons which cause light emission. The luminance and the achieved brightness is dependent from the amplitude of the driving voltage. An Increasement of the frequency of the driving voltage causes a colour shift towards shorter wavelengths. This gives the impression of a higher luminance. The amplitude and frequency should be adjusted close to the recommended operating data of the el-lamp and to the needs of the application carefully. This is because the useful lifetime of the el-lamp will decrease with higher operating voltages and frequencies