Patents Assigned to Wei Hai Bei Yang Electric Group Corp.
  • Power supply unit for discharge lamps
    Patent number: 5311102
    Abstract: The present invention relates to a power supply unit for discharge lamps, comprising a rectifier (3); an oscillator output portion (5); an inductor (1); capacitor (2, 4, 7, 8). And further comprising a sampling resistor (9) and a module (10). It is used to reduce the capacitive impedance at the input end of the circuit, minimizing the components of high-order harmonics produced in the circuit, weakening the high-order harmonics of source current to the degree that they no longer impact the power network.
    Type: Grant
    Filed: May 12, 1992
    Date of Patent: May 10, 1994
    Assignee: Wei Hai Bei Yang Electric Group Corp.
    Inventor: Rong Jiu Du