Patents Assigned to Zirco, Inc.
  • Patent number: 4920470
    Abstract: An inverter circuit includes a transformer having a primary winding with a first end adapted to be connected to a d.c. source, a switch connecting the other end of the primary winding to a reference potential, a secondary winding coupled to the primary winding, a rectifier for rectifying the output of the secondary winding, and a bridge switch circuit connected to invert the rectified secondary winding voltage to produce an a.c. output voltage. The inverter circuit further includes a first control circuit for producing a first pulse train of pulses having a first given frequency and a pulse width responsive to the rectified output voltage of the secondary winding, and a circuit for applying the pulse train to the switch for controlling the switch to open and close at the given frequency.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: April 24, 1990
    Assignee: Zirco, Inc.
    Inventor: Philip E. Clements