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:
Sep. 16, 2003
Filed:
Apr. 26, 2001
Applicant:
Inventors:
Kazuyuki Hayakawa, Gifu, JP;
Ryoichi Uda, Gifu, JP;
Assignee:
Kabushiki Kaisha Sanyo Denki Seisakusho, Gifu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/16 ;
U.S. Cl.
CPC ...
H02H 3/16 ;
Abstract
A step-up transformer is disposed on a wiring substrate on which an inverter which converts a commercial a.c. power into a high frequency power and a ground fault detection circuit are mounted and within a casing . Lead wires which extend from the opposite ends of the secondary winding of the step-up transformer to the outside thereof are mounted upright on the wiring substrate . Coils are disposed on air-core bobbins , which are threaded by the lead wires . Outputs from the coils are fed to a ground fault detection circuit.