Patent Number: 8,878,452

Title: Bi-level dimming controller for LED light fixture

Abstract: A bi-level dimming control circuit is disclosed. The bi-level dimming control circuit is electrically coupled between two switches and a driver circuit that is compatible with 0 to 10 volt dimming signals. The bi-level dimming control circuit controls the output from the driver circuit based on the on and off positions of the switches. In repose to the on and off positions of the switches the driver circuit powers a light engine between a maximum light output mode, a zero light output mode and a reduced or dimmed light output mode. The bi-level control circuit is used to modulate LED light engines, fluorescent light engines and combinations thereof.

Inventors: Clark; Walter Blue (Palo Alto, CA), Li; Chuan (Fremont, CA)

Assignee: Fine Lite Inc.

International Classification: H05B 37/00 (20060101)

Expiration Date: 2019-11-04 0:00:00