Patents by Inventor Kenneth A. Reindel

Kenneth A. Reindel 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).

  • Programmable hardware element pre-regulator
    Patent number: 7684878
    Abstract: System and method for providing a programmable power supply. The programmable power supply may include a programmable hardware element (PHE) that couples to a power supply (DC-DC converter) and which in turn couples to a linear regulator. The PHE may implement a PID control algorithm that receives a measurement of the output power and may use PID and/or non-linear control to ensure that the power supply and the linear regulator maintain similar power levels. The PHE may be configured based on a graphical program, thus enabling fast and efficient modifications to the programmable power supply.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: March 23, 2010
    Assignee: National Instruments Corporation
    Inventors: Kenneth A. Reindel, George C. Topala, Gustavo Jesus Castro
  • Programmable Hardware Element Pre-Regulator
    Publication number: 20070185590
    Abstract: System and method for providing a programmable power supply. The programmable power supply may include a programmable hardware element (PHE) that couples to a power supply (DC-DC converter) and which in turn couples to a linear regulator. The PHE may implement a PID control algorithm that receives a measurement of the output power and may use PID and/or non-linear control to ensure that the power supply and the linear regulator maintain similar power levels. The PHE may be configured based on a graphical program, thus enabling fast and efficient modifications to the programmable power supply.
    Type: Application
    Filed: January 8, 2007
    Publication date: August 9, 2007
    Inventors: Kenneth A. Reindel, George C. Topala, Gustavo Jesus Castro
  • In-circuit current measurement
    Patent number: 5386188
    Abstract: A current in a circuit is measured without breaking the circuit. A relatively low resistance element in the circuit such as a component lead is chosen. A current is forced through the element and the voltage drop measured. Another current is forced through the element and the voltage drop measured. The values of these currents and voltages are used to determine the original current in the circuit.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: January 31, 1995
    Assignee: Keithley Instruments, Inc.
    Inventors: Michael Minneman, Kenneth A. Reindel, John G. Banaska, Gary K. Bish, Andy J. Creque, Michael Atwell
  • JFET ohmic differential amplifier
    Patent number: 4598253
    Abstract: The JFET transistor differential amplifier herein serves as an input stage, as for an electrometer operational amplifier, and exhibits high input impedance and low leakage current. This is achieved by biasing the JFET transistors so as to operate in the ohmic region rather than the saturation region of their characteristic drain current-gate to source voltage curve.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: July 1, 1986
    Assignee: Keithley Instruments, Inc.
    Inventors: Kenneth A. Reindel, Thomas J. Mego
  • Electronic measuring/monitoring instrument
    Patent number: D343799
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: February 1, 1994
    Assignee: Keithley Instruments, Inc.
    Inventors: Robert G. Spinks, William J. Kasprik, Maria G. Mock, Kenneth A. Reindel
  • Electronic measuring/monitoring instrument
    Patent number: D343800
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: February 1, 1994
    Assignee: Keithley Instruments, Inc.
    Inventors: Robert G. Spinks, David J. Kruszewski, Michael P. Minneman, Kenneth A. Reindel