Patents by Inventor Philippe Despiney

Philippe Despiney 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).

  • Patent number: 4327390
    Abstract: A capacitive voltage transformer of the type having voltage divider capacitors and an electronic amplifier connected to one of the divider capacitors includes circuitry for isolating the voltage divider capacitors in the event that primary power to the voltage divider is interrupted. The circuitry measures and compares the voltage at a terminal of one of the divider capacitors and the current through the divider. If primary power to the voltage divider is interrupted, the capacitor voltage remains high while the divider current goes to zero, and the circuitry acts to isolate (such as through relay controlled switches) the divider capacitors from the electronic amplifier. This prevents any distortion from appearing in the voltages across the divider capacitors and prevents transients from developing at the input to the electronic amplifier.
    Type: Grant
    Filed: April 28, 1980
    Date of Patent: April 27, 1982
    Assignee: Enertec
    Inventor: Philippe Despiney