Incandescence device for auxiliary heating device of vehicle, has control unit with input voltage signal having specific clock frequency and providing current with saw tooth function for incandescence unit

摘要

The device has a control unit with an input voltage signal that is a clocked pulse-width modulated square wave signal. The control unit provides current (IG) for an incandescence unit, where the current has saw tooth function. The control unit has an inductive unit connected in series with the incandescence unit. The voltage signal has a clock frequency between 5 kilohertz and 20 kilohertz.