Patents by Inventor Raldon M. Smith

Raldon M. Smith 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).

  • Fault tolerant modular power supply system
    Patent number: 4877972
    Abstract: A modular power supply system in which a plurality of power supply modules connected in parallel to a load contribute equal currents, even if one or more of the power supply modules fails. A first order fault tolerant modular power supply system includes three power supply modules (38, 40 and 42) connected in parallel to a load (32). The output current from each of the power supply modules is separately compared to the output current from one of the other power supply modules in a loop arrangement, using three control circuits (64, 66 and 68). A signal indicative of the current contributed by each pair of the power supply modules is input to the control circuit, producing a differential output signal used as a reference to control the output current from each of the power supply modules.
    Type: Grant
    Filed: June 21, 1988
    Date of Patent: October 31, 1989
    Assignee: The Boeing Company
    Inventors: Seyd M. Sobhani, Raldon M. Smith