Patents by Inventor William C. Weeman

William C. Weeman 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).

  • Patent number: 11971434
    Abstract: A voltage source device, including a first voltage source configured to output a first voltage, source pathways to connect the first voltage source to a device under test, sensing pathways electrically coupled to the device under test; and circuitry configured to sample a second voltage at the device under test, determine a voltage difference between the first voltage and the second voltage, and adjust the first voltage based on the difference between the first voltage and the second voltage.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: April 30, 2024
    Assignee: Keithley Instruments, LLC
    Inventor: William C. Weeman
  • Publication number: 20230393213
    Abstract: A test and measurement instrument including a voltage source configured to output a source voltage, a current sensor, and one or more processors. The one or more processors are configured to determine an estimation of a load of an unknown connected device under test based on the source voltage, the current sensor, and a voltage of the connected device under test without any prior knowledge of the connected device under test.
    Type: Application
    Filed: August 16, 2023
    Publication date: December 7, 2023
    Applicant: Keithley Instruments, LLC
    Inventor: William C. Weeman
  • Patent number: 11768248
    Abstract: A test and measurement instrument including a voltage source configured to output a source voltage, a current sensor, and one or more processors. The one or more processors are configured to determine an estimation of a load of an unknown connected device under test based on the source voltage, the current sensor, and a voltage of the connected device under test without any prior knowledge of the connected device under test.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: September 26, 2023
    Assignee: Keithley Instruments, LLC
    Inventor: William C. Weeman
  • Publication number: 20230115051
    Abstract: A configurable instrument includes a mainframe having one or more processors, a chassis having slots to accept one or more instrument modules, a communication bus coupled to all of the instrument modules inserted in the slots, and a communication backplane, separate from the communication bus, and configured to allow point-to-point communication between any pair of modules inserted in the slots.
    Type: Application
    Filed: October 10, 2022
    Publication date: April 13, 2023
    Applicant: Keithley Instruments, LLC
    Inventors: Gregory Roberts, II, William C. Weeman
  • Publication number: 20220350352
    Abstract: A voltage source device, including a first voltage source configured to output a first voltage, source pathways to connect the first voltage source to a device under test, sensing pathways electrically coupled to the device under test; and circuitry configured to sample a second voltage at the device under test, determine a voltage difference between the first voltage and the second voltage, and adjust the first voltage based on the difference between the first voltage and the second voltage.
    Type: Application
    Filed: April 30, 2021
    Publication date: November 3, 2022
    Applicant: Keithley Instruments, LLC
    Inventor: William C. Weeman
  • Publication number: 20200400751
    Abstract: A test and measurement instrument including a voltage source configured to output a source voltage, a current sensor, and one or more processors. The one or more processors are configured to determine an estimation of a load of an unknown connected device under test based on the source voltage, the current sensor, and a voltage of the connected device under test without any prior knowledge of the connected device under test.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 24, 2020
    Applicant: Keithley Instruments, LLC
    Inventor: William C. Weeman
  • Patent number: 10484002
    Abstract: A digital-to-analog converter, including an input to receive a digital signal; a first comparator configured to receive the digital signal and output a first signal based on the digital signal and a first threshold; a second comparator configured to receive the digital signal and output a second signal based on the digital signal and a second threshold, the second threshold different from the first threshold; and an integrator configured to receive the first signal and the second signal and integrate the first signal and the second signal into an analog signal that represents the digital signal.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: November 19, 2019
    Assignee: Keithley Instruments, LLC
    Inventors: William C. Weeman, Gregory Roberts, II