METHOD FOR PRODUCING IMPULSE VOLTAGE SEQUENCES TO OPERATE DISCHARGE LAMPS AND CIRCUIT PERTAINING THERETO

摘要

The invention relates to a method for producing impulse voltage sequences to operate discharge lamps (8) by means of pulsed, dielectrically impeded discharge, whereby part of the required pulse overshoot values is replaced by an offset direct voltage component (UDC(t)). One of the advantages provided is that a correspondingly lower proportion of EMI is produced when impulse voltage sequences are generated. The invention also provides for injection of part of the effective power which is injected mainly for the duration of the voltage pulses in order to produce the discharge on the basis of the offset direct voltage (UDC(t)). A circuit is provided with a series parallel connection of an impulse circuit (1) and a direct voltage circuit (2), whereby the impulse circuit (1) can be dimensioned to have a lower output in comparison with prior art.