Patents by Inventor David John Aarons

David John Aarons 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).

  • Gas discharge lamp drive circuitry
    Patent number: 6815906
    Abstract: An apparatus and method for driving a gas discharge lamp, and in particular for dimming fluorescent lamps or tubes. An electronic circuit for controlling a gas discharge lamp is connected to an electrical power source and generates a high frequency pulse train that is applied to the electrodes of the lamp to light the lamp. A choke limits the current drawn by the lamp. A first series of pulses is produced and independent from this a second series of pulses is produced independently from the first, the first and second series of pulses being combined additively to produce the high frequency pulse train.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: November 9, 2004
    Inventors: David John Aarons, John Mullenger