Patent ID: 7777423

Claim:
An electronic ballast with a step-up converter (LH, SH, DH, CH), which has a switching element (SH) and an input capacitance (C), for operation using a phase gating dimmer, which has an inductance acting in series with the supply, characterized in that, within a system half-cycle, the operational parameters of the step-up converter (LH, SH, DH, CH) are set during the demagnetization (T 2 ) of the inductance in the phase gating dimmer, temporally after the termination of the phase gating, in such a way that, in comparison with the operation of the step-up converter (LH, SH, DH, CH) after the demagnetization (T 2 ) of the inductance, a temporarily increased current (ILH) flows through the step-up converter.