Patents by Inventor Christian Balke

Christian Balke 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).

  • Current meter with reduced range switching and load transients
    Patent number: 7538539
    Abstract: An ammeter for ATE instrumentation includes an amplifier, a first current measuring circuit coupled to the amplifier's power supply leads, and a second current measuring circuit coupled to the amplifier's output. The first current measuring circuit is used to select a desired current measurement range, away from the amplifier's output. Output transients caused by range changes are therefore avoided. The ammeter's response to load transients is also minimized, by providing smooth transitions between low current and high current operation.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: May 26, 2009
    Assignee: Teradyne, Inc.
    Inventor: Christian Balke
  • V/I source and test system incorporating the same
    Patent number: 7489146
    Abstract: A voltage/current (V/I) source includes circuitry having first, second, third and fourth nodes, a first current source electrically connected to the first node, a second current source electrically connected to the second node, where the third and fourth nodes are between the first and second nodes, and an operational amplifier (op-amp) having an output, an inverting input, and a non-inverting input. The output is electrically connected to the third node, and the non-inverting input is electrically connected to a voltage source. A feedback line is between the fourth node and the inverting input.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: February 10, 2009
    Assignee: Teradyne, Inc.
    Inventors: Christian Balke, Cristo da Costa
  • V/I source and test system incorporating the same
    Publication number: 20070210810
    Abstract: A voltage/current (V/I) source includes circuitry having first, second, third and fourth nodes, a first current source electrically connected to the first node, a second current source electrically connected to the second node, where the third and fourth nodes are between the first and second nodes, and an operational amplifier (op-amp) having an output, an inverting input, and a non-inverting input. The output is electrically connected to the third node, and the non-inverting input is electrically connected to a voltage source. A feedback line is between the fourth node and the inverting input.
    Type: Application
    Filed: December 26, 2006
    Publication date: September 13, 2007
    Inventors: Christian Balke, Cristo da Costa