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:
May. 28, 1991
Filed:
Sep. 27, 1989
Hitachi Video Engineering, Inc., Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A horizontal deflection circuit comprising a horizontal output transistor, and a drive circuit is connected between the base and the emitter of the horizontal output transistor to supply a base drive voltage to the horizontal output transistor in order to control the conduction between the collector and the emitter of the horizonal output transistor, wherein first and second switching means are provided in parallel between the base of the horizontal output transistor and the drive circuit (or between the emitter of the horizontal output transistor and the drive circuit), the first switching means permitting only the current to flow from the base of the horizontal output transistor to the drive circuit (or from the drive circuit to the emitter of the horizontal outut transistor) and the second switching means being conductive only during the conductive period of the horizontal output transistor.