Power supply for a raster center controller for a video...

Details Power supply for a raster center controller for a video... Power supply for a raster center controller for a video...

G - Physics

09

G

G09G 1/04 (2006.01) H04N 3/227 (2006.01)

Patent

CA 2180399

A power supply for a raster center controller for a video display appliance which can prevent picture movement phenomena of a cathode ray tube which are caused by unstable power supply to the raster center controller due to the change of the horizontal frequency. The power supply for a raster center controller includes coils, provided in a secondary winding of a flyback transformer, for generating and providing to the raster center controller a pulse voltage having a pulse width corresponding to that of a high voltage developed in the flyback transformer, first and second power supply sections, coupled between the coils and the raster center controller, for providing positive and negative supply voltages to the raster center controller by rectifying and performing charge/discharge operation with respect to the pulse voltage developed in the coils, respectively.

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