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. 31, 2006
Filed:
Sep. 30, 2004
Self-contained, self-snubbed, hid dimming module that exhibits non-zero crossing detection switching
Applicants:
Christopher A. Hudson, Blacksburg, VA (US);
Thomas D. Hirt, Blacksburg, VA (US);
Inventors:
Christopher A. Hudson, Blacksburg, VA (US);
Thomas D. Hirt, Blacksburg, VA (US);
Assignee:
Hubbell Incorporated, Orange, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); H02H 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A protection circuit for an HID dimming circuit is provided. A resistive component limits the initial current after a relay closes and current flows from a charged capacitor to a second capacitor. An inductive component limits the rate of change of current through the circuit. A voltage limited device limits voltage across the contacts of a solid state relay. The circuit is preferably formed in a small module that is adapted to be plugged into an HID lighting device.