Patents by Inventor John Kiviranna

John Kiviranna has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Regulated power supply crow-bar protection
    Patent number: 4090123
    Abstract: When a regulated power supply incorporating a series pass transistor as the regulating element is crow-barred, the control circuitry continues to drive the pass transistor to maximum available current. The pass transistor may be overheated and eventually both the pass transistor and the crow-bar itself may be damaged. To prevent this latter from happening, the drive to the pass transistor is cut back in response to the actuation of the crow-bar.
    Type: Grant
    Filed: November 11, 1976
    Date of Patent: May 16, 1978
    Assignee: Forbro Design Corp.
    Inventor: John Kiviranna