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:
May. 05, 1987
Filed:
Oct. 02, 1985
Raymond W Mackenzie, Baldwin Boro, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A shift register is utilized to provide a 90.degree. delay in a pulse width modulated current signal to determine volt-amperes reactive. The shift register is associated with a clock that provides a preselected frequency that, in combination with the number of stages in the shift register, delays the pulse width modulated current signal by an amount equivalent to one-quarter period of the current waveform in the metered circuit. After delaying the pulse width modulated signal by 90.degree., the shifted signal is multiplied by a voltage signal that represents the voltage in the metered circuit and the resulting product signal is input to a voltage-to-frequency converter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile