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:
Nov. 23, 1976
Filed:
May. 01, 1975
David R Bratton, Dublin, OH (US);
Jeffrey M Powell, Columbus, OH (US);
Garry A Reichle, Worthington, OH (US);
Solid State Controls Inc., Columbus, OH (US);
Abstract
A power circuit including an x and y inverter, an x and y constant voltage transformer, and a filtered d.c. input operable to provide a three phase sine wave output. The three phase outputs from the two transformers are a result of interconnections of the secondary windings of the transformer - in essence connecting the conventional two phase to three phase connections. The circuit is operable to provide a constant three phase output when a balanced load is applied. With an unbalanced load the phase of the output voltages of the two transformers are corrected relative to each other. A feedback circuit that includes an oscillator continuously samples the phase of the output voltage of each of the two transformers and adjusts the phase of one transformer output to that of the other.