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:
Dec. 09, 1986
Filed:
Nov. 21, 1984
Applicant:
Inventor:
Eiichi Sugishima, Nagoya, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 18 ; 318806 ;
Abstract
The inverter device for performing a.c.-d.c.-a.c. conversion has a power discrimination circuit for discriminating whether a power source is of a single phase or three phases. As a result of discrimination, a suitable overload protecting circuit provided in the device is selected or a reference level for overcurrent is changed to thereby protect structural elements such as a converter, a smoothing capacitor etc. from breakage caused by overcurrent.