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. 05, 1991
Filed:
Dec. 04, 1989
Age J Van Dalfsen, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A circuit arrangement for a picture display device for generating an essentially sawtooth-shaped line deflection current with a trace and a retrace through a deflection coil, which circuit arrangement comprises a series circuit of a trace capacitor, the line deflection coil and a bidirectionally conducting, line frequency-controlled switch which is conducting during the trace time and is not conducting during the retrace time, in which retrace time the deflection coil and a retrace capacitor are part of a resonant network. The series circuit also comprises a voltage source, while the losses in the series circuit are so low that the sum of the DC components of the voltage of the source and of the voltage across the trace capacitor is many times higher, at least 5 times, than the amplitude of the AC component of the source. The deflection current is given a desired variation by means of three controls.