Patents by Inventor Lawrence M. Klubert

Lawrence M. Klubert 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).

  • Source measure unit current preamplifier
    Patent number: 6069484
    Abstract: A bi-directional current scaling preamplifier is inserted between a device under test and a source measure unit or a source measure unit and switching matrix combination. The bi-directional current scaling preamplifier is formed from an operational amplifier, a range-changing network, and a voltage to current converting circuit. Either the network or the converting circuit is provided with an inverter. The elements are arranged so that current from the source measure unit into the device under test is bi-directionally scaled.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: May 30, 2000
    Assignee: Keithley Instruments, Inc.
    Inventors: Gregory Sobolewski, Lawrence M. Klubert