Patents by Inventor David Wiesmueller

David Wiesmueller 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).

  • Power supply device comprising several switched-mode power supply units that are connected in parallel
    Patent number: 7046524
    Abstract: The invention relates to a power supply device having several switch-mode power supplies connected in parallel to supply at least one consuming unit, each switch-mode power supply generating an output current I0 and an output voltage U0(I0, RL) that is a function of the output current I0 and a load resistance RL, and having a control device for each switch-mode power supply, the control device having a first stage with a P element (54) that receives a P element input voltage which is derived from the output voltage U0(I0, RL), and generates a P element control voltage UVS, that is used to control the respective switch-mode power supply, the first stage being active when 0?I0?I0P, a second stage having a current reproduction circuit which reproduces the output current I0 of the respective switch-mode power supply and generates an output current control voltage UP which is used to control the respective switch-mode power supply, the second stage being active when I0P?I0?I0S, and a third stage having an amplifie
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: May 16, 2006
    Assignee: Minebea Co., Ltd.
    Inventors: Hans Hoffman, Robert Rathmann, David Wiesmueller
  • Power supply device comprising several switched-mode power supply units that are connected in parallel
    Publication number: 20050094422
    Abstract: Abstract of the Disclosure The invention relates to a power supply device having several switch-mode power supplies connected in parallel to supply at least one consuming unit, each switch-mode power supply generating an output current I0 and an output voltage U0(I0, RL) that is a function of the output current I0 and a load resistance RL, and having a control device for each switch-mode power supply, the control device having a first stage with a P element (54) that receives a P element input voltage which is derived from the output voltage U0(I0, RL), and generates a P element control voltage UVS, that is used to control the respective switch-mode power supply, the first stage being active when 0 ? I0 ? I0P, a second stage having a current reproduction circuit which reproduces the output current I0 of the respective switch-mode power supply and generates an output current control voltage UP which is used to control the respective switch-mode power supply, the second stage being active when I0P ? I0 ? I0S, a
    Type: Application
    Filed: September 22, 2004
    Publication date: May 5, 2005
    Applicant: Minebea Co., Ltd
    Inventors: Hans Hoffmann, Robert Rathmann, David Wiesmueller