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:
Jan. 31, 1989
Filed:
Oct. 22, 1986
Shigeru Kashiwagi, Noda, JP;
Abstract
A horizontal deflection circuit for performing horizontal sweep operation of a CRT includes a saturable reactor having controlled windings connected through the primary winding of a flyback transformer to the CRT horizontal deflection coil, to supply deflection current thereto from a voltage supply produced from a voltage control circuit. The level of this supply voltage is controlled by feedback operation in accordance with the amplitude of pulses produced from an output winding of the flyback transformer such as to maintain this pulse amplitude at a fixed value, and hence maintain an EHT voltage derived from pulses from a secondary winding of the transformer at a fixed value. These fixed values are held constant when a DC current passed through the reactor control winding is varied to adjust the inductance of the controlled windings, and thereby adjust the horizontal sweep width produced on the CRT screen.