Invention Grant
- Patent Title: Analog circuit for color change dimming
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Application No.: US14525369Application Date: 2014-10-28
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Publication No.: US09756694B2Publication Date: 2017-09-05
- Inventor: John G. Serra , Michael Gielniewski
- Applicant: ABL IP Holding LLC
- Applicant Address: US GA Decatur
- Assignee: ABL IP HOLDING LLC
- Current Assignee: ABL IP HOLDING LLC
- Current Assignee Address: US GA Decatur
- Agency: Kilpatrick Townsend & Stockton, LLP
- Main IPC: H05B37/00
- IPC: H05B37/00 ; H05B33/08

Abstract:
An analog-based dimmable LED lighting system includes a plurality of LED lighting modules, which emit light at different correlated color temperature (CCT) ranges. Each of the LED lighting modules is powered by a common dimming signal in the form of an AC voltage which corresponds to a dimming level in a dimming region. Each of the LED lighting modules includes an LED, an analog rectifier bridge to convert the AC voltage of the common dimming signal to a DC voltage, and an analog current limiter connected between the rectifier and the LED to control current through the LED according to the common dimming signal. The LED(s) in the different lighting modules are controlled, via respective analog current limiter, to produce a resultant light at a selected CCT and light intensity according to the common dimming signal.
Public/Granted literature
- US20150115823A1 ANALOG CIRCUIT FOR COLOR CHANGE DIMMING Public/Granted day:2015-04-30
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