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:
Dec. 20, 1988
Filed:
Apr. 13, 1987
Raymond C Yan, Daly City, CA (US);
Teledyne Industries, Inc., Mountain View, CA (US);
Abstract
The present invention provides a precision current source wherein a reference current level is established by the inter-dependent operation of three current stages. The first stage provides first and second current paths and functions to mirror the current level through the first and second current paths. A second stage, coupled to the first and second current paths, defines a first current/voltage relationship at respective points in the first and second current paths. A third stage, also coupled to the first and second current paths, defines a second current/voltage relationship again at the respective points in the first and second current paths. In accordance with the present invention, the first and second current/voltage relationships are chosen to be mutually solvable for a discrete, non-zero pairing of voltage and current levels, thereby establishing a reference current level at the defined current set point.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile