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.:

US 10109997 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 23, 2018

Filed:

Feb. 19, 2016
Applicant:

Varian Semiconductor Equipment Associates, Inc., Gloucester, MA (US);

Inventors:

Adrian Wilson, Newcastle upon Tyne, GB;

Arsen Babayan, Gloucester, MA (US);

Herbert Piereder, Amsterdam, NL;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/02 (2006.01); H01H 9/54 (2006.01); H03K 17/13 (2006.01); H02H 3/087 (2006.01);
U.S. Cl.
CPC ...
H02H 9/025 (2013.01); H01H 9/542 (2013.01); H01H 9/541 (2013.01); H01H 2009/544 (2013.01); H02H 3/087 (2013.01); H03K 17/13 (2013.01);
Abstract

A fault current limiter may include a current limiting leg to transmit a first current and a control leg in parallel with the current limiting leg, the control leg to transmit a second current. The control leg may include a plurality of solid state switches arranged in electrical series with one another; a plurality of current monitors arranged in electrical series with the plurality of solid state switches; and at least one triggering circuit, wherein the plurality of current monitors are electrically coupled to the at least one triggering circuit, and wherein the at least one triggering circuit is optically coupled to the plurality of solid state switches.


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