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.

Date of Patent:
Oct. 22, 1991

Filed:

Mar. 30, 1990
Applicant:
Inventors:

Shunji Onodera, Iwai, JP;

Shinichi Ito, Kashiwa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 20 ; 363 68 ; 336185 ;
Abstract

A flyback power supply for use with a cathode-ray tube includes a flyback transformer which comprises a core having two spaced core legs, and two core units supported respectively on the core legs. Each of the coil units includes a low-voltage coil bobbin fitted over one of the core legs, a low-voltage coil wound around the low voltage coil bobbin, a high-voltage coil bobbin disposed around the low-voltage coil bobbin, and a high-voltage coil which comprises a plurality of coil layers wound successively around the high-voltage coil bobbin with insulating layers interposed between the coil layers, the low-voltage coils of the coil units being connected parallel to each other. Diodes are connected in series with the coil layers, respectively of the high-voltage coil of each of the coil units such that voltages produced across the coil layers will be in phase with each other. The high-voltage coils of the coil units are connected in series with each other, whereby voltages produced across the high-voltage coils are added and rectified.


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