Patents by Inventor Olga Siwak

Olga Siwak 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).

  • Circuit arrangement for discharging an electrical energy store and power converter comprising such a circuit arrangement
    Patent number: 9660476
    Abstract: A circuit assembly for discharging an electrical energy store includes a first discharge current path for uncontrolled, passive discharging of the energy store and for keeping a defined charge voltage of the energy store, and a second discharge current path for controlled, active discharging of the energy store. A semiconductor switch electrically connects to a positive current connection of the energy store and to a negative current connection of the energy store. A voltage limiter includes a first current connection for electrically connecting to the positive current connection of the energy store and a second current connection for electrically connecting to the negative current connection of the energy store. The circuit assembly further includes a first control path for providing a first control signal from the first current connection of the voltage limiter to the control connection of the semiconductor switch in order to control the semiconductor switch.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: May 23, 2017
    Assignee: CONTI TEMIC MICROELECTRONIC GMBH
    Inventors: Stefan Flock, Uwe Krella, Olga Siwak
  • Circuit Arrangement For Discharging An Electrical Energy Store And Power Converter Comprising Such A Circuit Arrangement
    Publication number: 20150357857
    Abstract: A circuit assembly for discharging an electrical energy store includes a first discharge current path for uncontrolled, passive discharging of the energy store and for keeping a defined charge voltage of the energy store, and a second discharge current path for controlled, active discharging of the energy store. A semiconductor switch electrically connects to a positive current connection of the energy store and to a negative current connection of the energy store. A voltage limiter includes a first current connection for electrically connecting to the positive current connection of the energy store and a second current connection for electrically connecting to the negative current connection of the energy store. The circuit assembly further includes a first control path for providing a first control signal from the first current connection of the voltage limiter to the control connection of the semiconductor switch in order to control the semiconductor switch.
    Type: Application
    Filed: October 10, 2013
    Publication date: December 10, 2015
    Applicant: CONTI TEMIC MICROELECTRONIC GMBH
    Inventors: Stefan Flock, Uwe Krella, Olga Siwak