Patents Assigned to Lumatronix Manufacturing, Inc.
  • Ballast method and apparatus and coupling therefor
    Patent number: 6031338
    Abstract: A ballast is disclosed which can operate at an effective level of output with a number of different input voltage levels. A ballast is also disclosed that uses a ceramic as a heat sink for switching transistors. A ballast is further disclosed which uses a start signal for a power factor circuit to boost voltage after the load for the ballast has already had a current applied to it. Furthermore, a ballast is disclosed which has a transformer having a permeability which varies somewhat inversely with temperature over a given temperature range.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: February 29, 2000
    Assignees: Lumatronix Manufacturing, Inc., New Anthony, Inc.
    Inventors: Doo Eui Yoon, Eun Chul Shin, Cheong Bon Han