Patents Represented by Attorney Y. Jayachandra
  • Patent number: 4042852
    Abstract: A high frequency power supply with inductive coupling and a SCR starter to light two fluorescent lamps is described. It supplies high frequency square waves to the fluorescent lamp for improved light output, efficiency and stability of operation. The rectified line voltage from a full wave rectifier is fed via a SCR starter to two transistors that form an inverter circuit. The inverter circuit is coupled to a ferrite core autotransformer. The secondary windings of the autotransformer are used to heat the filaments of the electrodes of the fluorescent lamp, and to form a reactive coupling along with inductors for stabilizing the arc discharge of the fluorescent lamp.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: August 16, 1977
    Assignee: Unitron Corporation
    Inventors: George Zaderej, Andrew Zaderej