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. 15, 2019
Filed:
Apr. 25, 2017
Rab Lighting Inc., Northvale, NJ (US);
Ankit Sanghvi, Northvale, NJ (US);
RAB Lighting Inc., Northvale, NJ (US);
Abstract
An illustrative bi-level dimming controller for coupling to a dimming control input of a lighting driver includes a dimming preset selector for setting a preset dim level, and a dimming control circuit having variable impedance and providing a constant dimming voltage output for a preset dim level, even if the current supplied to or impedance coupled to the dimming controller changes. The dimming control circuit is responsive to the preset dim level to drive a dimming voltage output proportional to the preset dim level. The dimming controller may also include a dim enable circuit responsive to a detection signal to selectively couple and uncouple the dimming signal output with the dimming control input of the lighting driver, thereby providing switching between a preset dim level and a full light level. The detection signal may be electrically isolated from the dimming voltage output.