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:
Jun. 30, 1992
Filed:
Apr. 17, 1990
Scott E Blackburn, Dearborn Heights, MI (US);
Alexander Cook, Rockford, IL (US);
Sundstrand Corporation, Rockford, IL (US);
Abstract
An average current measuring circuit (40) in accordance with the invention includes a first switch (42) connected between a pair of reference potentials which has a duty cycle which is controlled by a control signal which pulse width modulates current flowing through the switch to a load and varies the current flowing through the switch in frequency; a first current transformer (44) coupled to the current flowing through the first switch for producing an output signal proportional to the current flow; a sampling circuit (46), coupled to the output signal, for sampling current magnitude when the switch is turned on; and an averaging circuit (60) coupled to the sampling circuit, for producing an average signal of successive samples of a current flow through the load.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile