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. 02, 2005
Filed:
May. 19, 2000
Gregory R. Kaminski, Waldorf, MD (US);
Gregory R. Kaminski, Waldorf, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A printed wiring board includes an input conditioner having a plurality of analog dc inputs and a plurality of analog dc outputs; a switching circuit having an analog dc output, the switching circuit being connected to the plurality of analog dc outputs of the input conditioner; a sample and hold converter having an analog dc output, the sample and hold converter being connected to the analog dc output of the switching circuit; an A/D converter having a digital output, the A/D converter being connected to the analog dc output of the sample and hold converter; a microprocessor connected to the digital output of the A/D converter; a timer circuit connected to the microprocessor; a random access memory connected to the microprocessor; and a VME interface connected to the microprocessor. The printed wiring board further comprises an ac multiplexer; a plurality of rms to dc converters connected to the ac multiplexer, the rms to dc converters being connected to the switching circuit; a zero crossing detector connected to the ac multiplexer; a phase detector connected to the zero crossing detector and to the microprocessor; a filter connected to one of the outputs of the zero crossing detector; and a frequency measurement circuit connected to the filter and to the microprocessor.