The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2007
Filed:
Feb. 28, 2005
John G. Banaska, Wadsworth, OH (US);
Wayne C. Goeke, Hudson, OH (US);
Gregory Sobolewski, Seven Hills, OH (US);
John G. Banaska, Wadsworth, OH (US);
Wayne C. Goeke, Hudson, OH (US);
Gregory Sobolewski, Seven Hills, OH (US);
Keithley Instruments, Inc., Cleveland, OH (US);
Abstract
A circuit for alternatively controlling a current through a device and permitting measurement of a voltage across the device or controlling a voltage across the device and permitting measurement of a current through the device includes a sense impedance in series combination with the device, an error amplifier selectable to control the controlled current or voltage, the error amplifier providing an error signal for the control, and a floating buffer driving the series combination in response to the error signal.