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:
Feb. 15, 1983
Filed:
May. 27, 1980
Applicant:
Inventor:
Grant D Avery, Loudon, NH (US);
Assignee:
Sprague Electric Company, North Adams, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307309 ; 307297 ; 323294 ; 323368 ;
Abstract
An integrated circuit includes a Hall-element, a voltage regulator, and a threshold detector. DC power is supplied through a pair of terminals that may be connected to a remote DC voltage source. A switchable constant current sink circuit connected across these terminals is turned on and off in response to the two output states of the threshold detector that in turn is responsive to the Hall-element output voltage. Thus the DC current flowing in the two DC supply lines is a predictable large value or small value corresponding to a low and a high magnitude magnetic field at the sensor, even when the supply DC voltage changes over a wide range.