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. 08, 1985
Filed:
Oct. 07, 1982
Edward J Cham, Warren, OH (US);
Theodore R Specht, Sharon, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A rectifier transformer circuit permitting six-phase double-wye operation with 120.degree. conduction, (without the use of an interphase transformer), and providing any predetermined degree of phase shift. The transformer comprises a zig-zag wye primary winding and a six-phase star secondary winding. By choosing the proper ratio for the turns of the zig and zag portions of the primary winding, any degree of phase shift can be obtained. The rectifier transformer is ideally suited for multiple-phase installations wherein several rectifier transformers are used, each providing a different amount of phase shift, without the use of separate phase-shift transformers.