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. 12, 1992
Filed:
Aug. 29, 1990
Applicant:
Inventor:
Yasuo Osawa, Kanagawa, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
307350 ; 307362 ; 307571 ; 323316 ;
Abstract
A sensing circuit is disclosed wherein a first MOS transistor is connected in series with a load to produce a source to drain voltage in response to the load current. A reference voltage generating circuit includes a second MOS transistor and provides a reference voltage determined by the source-to-drain voltage of the second MOS transistor in response to a constant current supplied thereto. A comparator circuit compares the source to drain voltage of the first MOS transistor with the reference voltage to sense the load current.