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:
Oct. 05, 2010
Filed:
Dec. 15, 2006
Erik H. Lange, Coon Rapids, MN (US);
Erik H. Lange, Coon Rapids, MN (US);
NVE Corporation, Eden Prairie, MN (US);
Abstract
A signal isolator for providing at an output thereof representations of input currents from a source provided in an input conductor supported on a substrate having a bridge circuit suited for electrical connection to a source of electrical energization with a pair of series circuit members electrically connected in parallel with one another supported on a substrate with each series circuit member having a magnetoresistive member electrically connected in series with a current value controller, controlled at a controller terminal, at an output terminal of that controller. Each magnetoresistive members is electrically isolated from the input conductor and has a resistance versus applied external magnetic field characteristic that is substantially linear for at least relatively small externally applied magnetic fields. The signal isolator further has a differential input amplifier connected at its inputs to both the magnetoresistive member and the current value controller in a corresponding one of the bridge circuit series circuit members, and has outputs connected to the controller control terminals which can be made through a lowpass filter. A signal monitor arrangement can be provided to have a constant representation value on the isolator output if magnetoresistive members cease to be in those magnetic fields arising from the input currents for a selected time duration.