Patents by Inventor F. N. Trofimenkoff

F. N. Trofimenkoff 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).

  • Voltage to frequency conversion circuit with a pulse width to period ratio proportional to input voltage
    Patent number: 4775841
    Abstract: A voltage to frequency converter controls the successive charge-discharge of an integrating circuit charging capacitor between low and high voltage levels to produce through a reference voltage controlled pulse generating circuit, a pulse output in which the ratio of input voltage to reference voltage equals the ratio of output pulse duration coincident with capacitor discharging, to period duration.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: October 4, 1988
    Inventors: F. N. Trofimenkoff, J. W. Haslett, A. E. Nordquist