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:
Apr. 03, 2007
Filed:
Feb. 04, 2005
Applicants:
Matthew B. Ballenger, Lexington, KY (US);
George B. Kendrick, Lexington, KY (US);
Inventors:
Matthew B. Ballenger, Lexington, KY (US);
George B. Kendrick, Lexington, KY (US);
Assignee:
Osram Sylvania Inc., Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); G05F 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A lamp includes a phase-control power controller within the lamp. The phase-control power controller includes an analog load voltage sensor that provides an optical output related to an RMS load voltage and a phase-controlled dimming circuit that has a comparison circuit that varies a resistance in the phase-controlled dimming circuit responsive to the optical output from the load voltage sensor.