US 10,757,783 B2
Color temperature controlled and low THD LED lighting devices and systems and methods of driving the sameGeneral
US 10,757,783 B2
Color temperature controlled and low THD LED lighting devices and systems and methods of driving the same
Tech Center:
2800 Semiconductors/Memory, Circuits/Measuring and Testing, Optics/Photocopying, Printing/Measuring and Testing
Examiner:
Don P Le
Art Unit:
2844 Electrical Circuits and Systems
Agent:
Inventors:
Michael Miskin; Robert L. Kottritsch
Assignee:
Priority:
12/02/11
Filed:
06/13/19
Granted:
08/25/20
Expiration:
12/02/31
Abstract
The purposes of the devices described herein are to provide an LED lighting device capable of efficiently and economically emitting light having a selectable color temperature or a warm-on-dim feature when driven with AC power and to provide LED lighting devices which have an improved power factor and a reduced total harmonic distortion when powered with AC power.
Cooperative Patent Classification (CPC)
H05H05B45/397H05B