Patents Assigned to DNF Electronics Co., Ltd.
  • Neon circuit including a protective structure
    Patent number: 5353214
    Abstract: A neon circuit includes a protective function and provides for an adjustable output voltage and an adjustable luminous intensity. The neon circuit when there is a neon bulb present as the load such as a sodium or mercury lamp provides for power saving and its life is lengthened with high dependability. The circuit includes a line filter and a high powered factor compensation circuit.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: October 4, 1994
    Assignee: DNF Electronics Co., Ltd.
    Inventor: Hyung-Kwang Kim