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:
Aug. 23, 2011
Filed:
Nov. 30, 2009
Michael F. Gallavan, Edmonds, WA (US);
Michael F. Gallavan, Edmonds, WA (US);
Fluke Corporation, Everett, WA (US);
Abstract
Voltage measuring instruments and methods of measuring the amplitude of an input signal are disclosed. In an example method of measuring the amplitude of an input signal, in an AC measurement mode, the input signal is coupled through a capacitor, the RMS amplitude of the input signal coupled through the capacitor is determined, and a digital value corresponding to the RMS amplitude is provided. In an automatic measurement mode, the RMS amplitude of the input signal is determined without first coupling the input signal through the capacitor, and a digital value corresponding to the RMS amplitude of the input signal is provided. Further disclosed is a calibration procedure may be used to compensate for any offset of an amplifier of the voltage measuring instrument.