Discharge lamp e.g. florescent lamp, operating device, includes decoupling device provided with current control unit for controlling filament current, and a heating transformer unit

摘要

A device for driving at least one first and one second discharge lamp (71,72) includes a de-coupling device (30) for decoupling a filament current for the filaments (711,712,721,722) of the discharge lamps from a supply branch of the device , in which the decoupling device (30) has a current control unit (PTC) for controlling the filament current and a heating transformer unit (Lhp, Lhs1, Lhs2, Lhs3). One first and second contacting device contacts the supply branch for contacting the first and second discharge lamps in which the secondary coil unit (Lhs1, Lhs2, Lhs3) of the heating transformer unit is connected to the first and contacting devices for supplying the filaments with filament current. Independent claims are included for (A) an electronic ballast device and (B) for a method of operating at least two discharge lamps.