Patents by Inventor Ernest D. Belanger

Ernest D. Belanger 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).

  • Power supply with switching means responsive to line voltage
    Patent number: 4843301
    Abstract: A power supply circuit capable of operation with 115 V.A.C. (low range) or 230 V.A.C. (high range) line voltages, having a transformer with a primary winding arrangement which can be switched by a relay to accomodate either voltage range. A line voltage sensing circuit is coupled to a low voltage tap on the primary winding to sense the line voltage. When the line voltage is in the high range the voltage sensing circuit leaves the relay de-energized; and the sensing circuit energizes the relay to switch the primary winding to the appropriate configuration when the line voltage is in the low range.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: June 27, 1989
    Assignee: OPT Industries, Inc.
    Inventor: Ernest D. Belanger