Patent ID: 8154213

Claim:
A circuit arrangement for operation of a high-pressure discharge lamp comprising: a commutation device, which has an input for coupling to a DC voltage source and has an output for coupling to the high-pressure discharge lamp, with the commutation device being configured to couple the voltage which is applied to the input to its output; a control apparatus, which is configured to commutate the polarity with which the voltage, which is applied to the input of the commutation device, is coupled to the output of the commutation device; a synchronization apparatus, which is configured to provide a synchronization signal at its output; a timer apparatus which is configured to produce a commutation initiation signal at its output, which commutation initiation signal is synchronized with a predeterminable operating frequency of the high-pressure discharge lamp; and a pattern apparatus, in which a choice of possible commutation times is stored, with the choice of the possible commutation times being synchronized in time to the synchronization signal, with the pattern apparatus having an input which is coupled to the output of the timer apparatus, for transmission of the commutation initiation signal, with the pattern apparatus being configured to couple a commutation control signal to the control apparatus, in order to produce commutation at the next commutation point in time from the choice of commutation times, on reception of a commutation initiation signal.