Patents by Inventor Ivan I. Navdarashvili

Ivan I. Navdarashvili 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).

  • Adjustable current source
    Patent number: 4378522
    Abstract: An adjustable current source comprises a choke (1) and a capacitor (2) whose reactive impedances are equal at the frequency of a variable voltage source (3), as well as a load current matching and adjusting unit made as a magnetic amplifier (4). Some outputs of the choke (1), the capacitor (2) and a primary winding (6, 7) of the magnetic amplifier (4) are coupled to respective phases of the variable voltage source (3). Other outputs of the choke (1), the capacitor (2) and the primary winding (6,7) of the magnetic amplifier (4) are joined in a star connection. The secondary winding (9, 10) of the magnetic amplifier (4) is coupled to the load (11). The control winding (13) of the magnetic amplifier (4) is coupled to a constant voltage source (14).
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: March 29, 1983
    Inventors: Robert N. Suladze, Kirill D. Gutterman, Medgar N. Gelenidze, Ivan I. Navdarashvili, Guram G. Shvangiradze, Revaz A. Grigolishvili, Zurab G. Tadumadze, Ramaz G. Kiknadze