Patents by Inventor Warren Moscowitz

Warren Moscowitz 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).

  • Method and circuit for controlling current in a high pressure discharge lamp
    Patent number: 6552498
    Abstract: A circuit for controlling current during run-up of a high pressure discharge lamp (140) comprises a buck converter (120) for generating a buck current to drive the high pressure discharge lamp and a control circuit (202) coupled to the buck converter (120) for varying the duty cycle of the buck current during run-up is disclosed. A method for controlling current in an electronic ballast during run-up of a high pressure discharge lamp comprises steps of detecting (501) lamp ignition, providing (502) a buck current to drive the lamp, and varying (504) the duty cycle of the buck current during run-up to control (506) the current in the lamp is also disclosed.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: April 22, 2003
    Assignee: Osram Sylvania Inc.
    Inventors: Himamshu V. Prasad, Young G. Kang, John G. Konopka, Warren Moscowitz