Patents by Inventor Laurence Aubrey Tunnicliffe

Laurence Aubrey Tunnicliffe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • LED ARRAY DRIVER
    Publication number: 20120001559
    Abstract: An LED driver (10) for driving an array of LEDs (22, 24, 26) from an AC power supply (14) including a plurality of switches (16, 18, 20), each switch acting to selectively enable forward conduction of a different LED (22, 24, 26); and a switch control unit (28) for controlling operation of the plurality of switches (16, 18, 20) so as to switch different, non-overlapping phase angle portions of a same repetitive waveform through each LED (22, 24, 26).
    Type: Application
    Filed: January 12, 2010
    Publication date: January 5, 2012
    Inventor: Laurence Aubrey Tunnicliffe