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. 18, 1977
Filed:
May. 25, 1976
Applicant:
Inventor:
Terence John Searle, Walton on Thames, EN;
Assignee:
Memory Devices Limited, East Molesey, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F / ; H03F / ;
U.S. Cl.
CPC ...
323-6 ; 323 / ; 3403 / ; 330110 ;
Abstract
An electrical isolator has a transformer with an impedance in series with the primary winding and a high gain amplifier amplifying voltages induced in the secondary winding. Feedback is provided from the amplifier output to produce a current generating flux in the transformer core in opposition to flux produced by current in the primary. Thus the flux density is reduced and with a very high gain amplifier may be made close to zero and well away from saturation.