Vorrichtung zur Erzeugung eines rampenförmigen Spannungsverlaufes in einer Steuerschaltung für einen Plasmabildschirm

摘要

The present invention relates to a device for generating a voltage ramp in a plasma display panel. To prime and/or reset the electrical charges present on the walls of the cells of a plasma display panel, it is known to apply a voltage ramp between the electrodes of the cells of the display panel. The device serving to generate this ramp usually comprises at least one DC voltage source, an inductor, switches operating in linear mode and diodes. The energy dissipated in the transistors serving as switches is relatively high. To reduce this dissipation, the invention proposes a device in which the switches operate in chopping mode.