Patents Assigned to Forbro Design Corp.
  • Regulated power supply with auto-transformer output and direct current feedback
    Patent number: 4107620
    Abstract: A bipolar regulated power supply employing an autotransformer to couple the output to the load is provided with a direct current feedback connected directly across the load. In this way losses in the transformer and leads connecting to the load are compensated for and direct current is eliminated from the output transformer when the input is ac coupled.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: August 15, 1978
    Assignee: Forbro Design Corp.
    Inventors: Paul Birman, Sarkis Nercessian
  • 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