Patents by Inventor Meinardus A. G. Nijholt

Meinardus A. G. Nijholt 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).

  • Device for energizing a D.C. motor, comprising an accumulator battery
    Patent number: 4187536
    Abstract: A small lightweight power-supply device a d.c. motor powered either by the a.c. supply voltage or by an accumulator battery which dissipates little power and has a well-defined output characteristic for a wide range of input voltages.The device comprises a flyback converter, the forward sweep time being a function of the output voltage and the current through the primary winding of the transformer of the flyback converter. The forward sweep time is controlled by a control circuit which is integrated for the greater part. There is provided a starting circuit. A level detector in the control circuit ensures that this circuit is activated only when its supply voltage, which is applied via the secondary winding of the transformer, is sufficiently high.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: February 5, 1980
    Assignee: U.S. Philips Corporation
    Inventors: George A. Govaert, Meinardus A. G. Nijholt, Lammert Rodenburg