Patents by Inventor Harald Stasch

Harald Stasch 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).

  • Switch-mode power supply having a free-running forward converter
    Patent number: 4680687
    Abstract: A switch-mode power supply has a rectifier for producing a small d.c. voltage from an input a.c. voltage, and a converter which comprises a switching transistor and a transformer. The converter arrangement is a free-running conductive converter and the switching transistor is switched on in the currentless state.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: July 14, 1987
    Assignee: Siemens Aktiengesellschaft
    Inventors: Harald Stasch, Rudolf Schierjott
  • Switched power pack with free-wheeling flow converter and switched controller at a secondary side
    Patent number: 4660133
    Abstract: A switched power supply has a rectifier arrangement for generating a DC voltage from an input AC voltage. A converter arrangement thereof has a switching transistor and a transformer. The converter arrangement is designed as a free-running flow converter wherein the switching transistor is switched on in a current-free condition. A secondary side of the converter arrangement comprises a secondary switch controller which is synchronized by the transformer and which regulates an output DC voltage.
    Type: Grant
    Filed: August 5, 1985
    Date of Patent: April 21, 1987
    Assignee: Siemens Aktiengesellschaft
    Inventor: Harald Stasch
  • Switched power supply comprising a free-running flow converter and electrically separated control loop
    Patent number: 4654771
    Abstract: A switched power supply has a rectifier arrangement for generating a DC voltage from an input AC voltage. A converter arangement in the power supply has a switching transistor and a transformer. The converter arrangement is designed as a free-running flow converter, whereby the switching transistor is switched on in the current-free condition. A control stage with an electrically separated control loop is provided at the secondary side, whereby the control stage acquires the deviation of an output DC voltage from a prescribed value and sets the pulse duty factor for the switching transistor via the control loop.
    Type: Grant
    Filed: August 5, 1985
    Date of Patent: March 31, 1987
    Assignee: Siemens Aktiengesellschaft
    Inventors: Harald Stasch, Rudolf Schierjott