Patents by Inventor James W. Brunelle

James W. Brunelle 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).

  • Control circuit for tap-switching power supplies and multi-tap transformers
    Patent number: 4733158
    Abstract: A tap-switching circuit for automatically controlling the output voltage of a multi-tap transformer in response to a varying input line voltage and/or system load current demand, includes voltage sensing circuitry in parallel with both the transformer voltage outputs and a voltage comparator for sensing changes in the system load demand requirements. A voltage reference is provided for automatically generating a pre-selected voltage reference level signal for the line and/or system load requirements. Voltage comparison circuitry is operatively connected with the voltage sensing circuitry for generating an enable signal whenever the input line voltage and/or system load current demand requirements sensed by the voltage sensing circuitry falls below the pre-selected voltage reference level signal.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: March 22, 1988
    Assignee: Datametrics Corporation
    Inventors: Vito J. Marchione, James W. Brunelle