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:
Feb. 02, 1982
Filed:
Mar. 31, 1980
Applicant:
Inventor:
Robert E Van de Grift, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363127 ;
Abstract
The invention provides a substantial improvement of a known rectifying circuit for a.c. signals by adding a circuit which measures the d.c. unbalance at the output and subsequently cancels said unbalance by feeding back compensation currents to the rectifying circuit. A dynamic range of 1 to 10,000 or more is then attainable. The rectifying circuit supplies a current whose shape is similar to that of the a.c. input signal, thus enabling r.m.s. values to be measured, for example in voltmeters.