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:
Oct. 25, 1994
Filed:
May. 12, 1993
Applicant:
Inventor:
Robert A Mammano, Costa Mesa, CA (US);
Assignee:
Unitrode Corporation, Billerica, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F / ;
U.S. Cl.
CPC ...
323207 ; 323222 ; 363 89 ;
Abstract
A high power factor regulator circuit which includes a variable multiplier, permitting the high power factor regulator circuit to be used with a number of input line voltage levels. In one embodiment a comparator determines the multiplication or gain factor to be applied in a control loop by comparing the rectified AC input voltage to a predetermined threshold value.