The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2005
Filed:
Jan. 21, 2002
Daniel Lopez, Villingen-Schwenningen, DE;
Jean-paul Louvel, Brigachtal, DE;
Martin Läufer, Villingen-Schwenningen, DE;
Daniel Lopez, Villingen-Schwenningen, DE;
Jean-Paul Louvel, Brigachtal, DE;
Martin Läufer, Villingen-Schwenningen, DE;
Thomson Licensing S.A., Boulogne, FR;
Abstract
The high voltage supply for a picture tube comprises a high voltage transformer, which generates the anode voltage of the picture tube, and a high voltage module with a switched mode power supply for providing a grid voltage, which is higher than the anode voltage. The output of the high voltage transformer is coupled to the transformer of the switched mode power supply, for adding the output voltage of the switched mode power supply to the high voltage of the high voltage transformer. Preferably, the transformer of the switched mode power supply provides the high voltage isolation, and at least the high voltage part of the module including the transformer is potted with a resin. The high voltage module provides advantageously also an output for a connection to the anode of the picture tube, so that the module can be used with present high voltage transformers, without requiring any modification. The primary side of the switched mode power supply comprises a control stage with adjustable means for setting a specific output voltage of the power supply. In a preferred embodiment, this output voltage is adjustable between 300 and 500 Volts, with respect to the high voltage of the high voltage transformer.