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:
Jan. 16, 2001
Filed:
Apr. 10, 1997
Applicant:
Inventors:
Jerzy Janczak, Woodhaven, NY (US);
Pawel M. Gradzki, Milford, CT (US);
Assignee:
Philips Electronics North America Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 3/702 ;
U.S. Cl.
CPC ...
H05B 3/702 ;
Abstract
A dimming interface for translating the conduction pulse width of a signal produced by a triac dimmer into a proportional rectified average voltage serving as a dimming signal. The dimming signal is supplied as an input to an IC driver for controlling the level of lamp illumination. The proportional rectified average voltage can be converted into a signal representing a duty cylce whereby a variation in the mains line voltage does not affect the dimming signal.