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. 19, 1994
Filed:
Oct. 01, 1992
Charles W Edwards, Monroeville Boro, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A circuit for producing an output signal representative of the phase angle of a single phase input signal includes a phase shift generator for receiving a single phase input signal and for generating a quadrature signal and a direct signal in response to the single phase input signal, and a phase locked loop coupled to the phase shift generator for generating an output signal in response to the quadrature and direct signals such that the output signal is phase locked with the single phase input signal. A method is also provided for producing an output signal representative of the phase angle of a single phase input signal, comprising the steps of: receiving a single phase input signal; generating a quadrature signal and a direct signal in response to the single phase input signal; and generating an output signal in response to the direct and quadrature signals, such that the output signal is phase locked with the single phase input signal.