Patents by Inventor Ewgeni HOFFMANN

Ewgeni HOFFMANN 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).

  • DC/DC converter and network feedback unit
    Patent number: 11863070
    Abstract: A DC/DC converter includes: a first connection pole and a second connection pole, wherein a first DC voltage is applied between the first connection pole and the second connection pole; a third connection pole and a fourth connection pole, wherein a second DC voltage is applied between the third connection pole and the fourth connection pole; a first commutation cell, wherein the first commutation cell has a capacitor, a diode and a semiconductor switch; a second commutation cell, wherein the second commutation cell has a capacitor, a diode and a semiconductor switch; and a precharging circuit for precharging the capacitor of the first commutation cell and the capacitor of the second commutation cell. The precharging circuit has a precharging resistor and an actuable switching device. The precharging resistor and the actuable switching device are connected in parallel.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: January 2, 2024
    Assignee: Lenze Swiss AG
    Inventors: Alex Itten, Benjamin Faessler, Christof Schneggenburger, Dirk Schekulin, Ewgeni Hoffmann
  • Electric Device
    Publication number: 20230049485
    Abstract: An electric device includes: a housing having a first electrically conductive housing wall; and a first circuit board which is arranged in the housing and which has an electrical conductor. The first electrically conductive housing wall can be electrically conductively connected to the electrical conductor of the first circuit board by use of a screw connection.
    Type: Application
    Filed: November 24, 2020
    Publication date: February 16, 2023
    Inventors: Uwe BEILFUSS-SPICKMANN, Benjamin FAESSLER, Ewgeni HOFFMANN, Christof SCHNEGGENBURGER
  • DC/DC Converter and Network Feedback Unit
    Publication number: 20210408907
    Abstract: A DC/DC converter includes: a first connection pole and a second connection pole, wherein a first DC voltage is applied between the first connection pole and the second connection pole; a third connection pole and a fourth connection pole, wherein a second DC voltage is applied between the third connection pole and the fourth connection pole; a first commutation cell, wherein the first commutation cell has a capacitor, a diode and a semiconductor switch; a second commutation cell, wherein the second commutation cell has a capacitor, a diode and a semiconductor switch; and a precharging circuit for precharging the capacitor of the first commutation cell and the capacitor of the second commutation cell. The precharging circuit has a precharging resistor and an actuable switching device. The precharging resistor and the actuable switching device are connected in parallel.
    Type: Application
    Filed: July 9, 2019
    Publication date: December 30, 2021
    Inventors: Alex ITTEN, Benjamin FAESSLER, Christof SCHNEGGENBURGER, Dirk SCHEKULIN, Ewgeni HOFFMANN