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. 20, 1977
Filed:
Aug. 13, 1976
Applicant:
Inventor:
Max S Macrander, Warrenville, IL (US);
Assignee:
GTE Automatic Electric Laboratories Incorporated, Northlake, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ; H01F / ;
U.S. Cl.
CPC ...
323 48 ; 179 / ; 323-6 ; 323 62 ; 325493 ;
Abstract
A direct current compensation circuit is provided for use with a transformer having a plurality of windings. A resistor is connected in series with a first winding. A transistor is coupled to the first resistor and to a compensation winding so that when the direct current flow through the resistor is greater than a predetermined value, a compensation current is supplied to the compensation winding. When the direct current flow through the resistor is less than the predetermined value, no compensation current is supplied to the compensation winding.