Patents by Inventor Chung Y. Choon

Chung Y. Choon 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).

  • Patent number: 5059870
    Abstract: An electronic starter for fluorescent lamps is disclosed. A Triac having a trigger electrode and having an anode and a cathode connectable to first and second filaments, respectively, of a fluorescent lamp is provided. A thermistor, a resistor, and a capacitor are connected in series across the anode and the cathode of the Triac, and a voltage responsive element, such as a bipolar Zener diode, is connected between the trigger electrode of the Triac and the junction between the resistor and the capacitor. This starter replaces conventional glow starters for fluorescent lamps, without requiring a special ballast.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: October 22, 1991
    Inventor: Chung Y. Choon