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.
摘要:
An image display device is disclosed including a metallic support plate carrying, on its front face, a plasma discharge display with an array of adjacent pairs of electrodes and, on its back face, a power supply. The power supply circuit of each pair of adjacent electrodes forms a current loop starting from the power supply and passing through the electrode then the electrode of the pair, the connection end of the electrode being linked to the power supply by means of a transverse electrical conductor placed on the front side of said metallic plate. According to the invention, the transverse conductor linked to the electrode forms a non-zero angle with said pair of electrodes. The differences in inductance between the various current loops of the display are thus reduced such that the differences in luminance between the various discharge regions of the plasma display are reduced.
摘要:
A high voltage transformer is provided for the voltage employed in the line deflection of an electron beam in a television receiver. The secondary high voltage winding is inserted into a case via an opening running parallel to the axis of the primary and secondary winding and is disposed in the case separate from the primary winding and is surrounded by a cast plastic resin. Preferably, the secondary winding body snaps into elastically supported protrusions disposed at the case. The plastic resin is filled into position through said opening. The high voltage connection is immersed into the plastic resin and is then led outwardly.