Patents by Inventor Mustafa Y. M. Saleh

Mustafa Y. M. Saleh 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).

  • Zero crossing detector
    Patent number: 4345169
    Abstract: An improved zero crossing detector utilizes a voltage comparator having two inputs and an output. An amplifier supplies the electrical signal to one input and an inverting amplifier supplies the inverse of this signal to the other input of the voltage comparator. The voltage comparator changes its state when the relative polarities of its two inputs change.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: August 17, 1982
    Assignee: Siemens Corporation
    Inventor: Mustafa Y. M. Saleh
  • Current foldback circuit for a DC power supply
    Patent number: 4326245
    Abstract: A DC power supply having an input stage receiving input power at one voltage and an output stage connected to the input stage producing output power at another, output voltage. The output stage receives a control signal reducing the output voltage by a prescribed amount when the output current exceeds a given level. The control unit includes a comparator which compares the output current with a reference level and produces a current foldback signal if the output current exceeds the reference level.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: April 20, 1982
    Assignee: Siemens Corporation
    Inventor: Mustafa Y. M. Saleh