Patents by Inventor Benjamin Yurick

Benjamin Yurick 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 mains zero-crossing detector
    Patent number: 7508240
    Abstract: A zero-crossing detector includes a pair of input terminals, the terminals being adapted to receive an AC input signal; a rectifier, the rectifier rectifying the AC input signal; a current source, the current source being powered by the rectified AC input signal; and an optoelectric coupler having a coupler input and a coupler output, the coupler input being driven by the current source and the coupler output providing a zero-crossing signal. The zero-crossing signal is galvanicly isolated from the AC input signal.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: March 24, 2009
    Assignee: Keithley Instruments, Inc.
    Inventors: Benjamin Yurick, Chris Miller