Patents by Inventor Woodrow L. Antle

Woodrow L. Antle 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).

  • Wide dimming range gas discharge lamp drive system
    Patent number: 5311104
    Abstract: A stable output, widely dimmable light source (20) utilizing a gas discharge lamp (14) including an external igniter (12) which is utilized to provide lamp ignition at approximately the same time as an AC potential source (22) provides power to the lamp (14) cathodes. A high voltage pulse is applied to the external igniter (12) causing ionization of the lamp gasses at the start of each time period during which the ballasted AC potential source (22) is applied to the lamp (14). Average light output level is controlled by a light output selector (36) which controls lamp on time and thus the average light output of the lamp (44). During operation lamp (14) is turned on several times per second, such as sixty-eight and the AC potential source (22) has a relatively high frequency, such as 45 KHz.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: May 10, 1994
    Assignee: AlliedSignal Inc.
    Inventor: Woodrow L. Antle