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.

Date of Patent:
Jul. 06, 2021

Filed:

Dec. 19, 2017
Applicant:

Qualitau, Inc., Mountain View, CA (US);

Inventor:

James Borthwick, Santa Clara, CA (US);

Assignee:

QualiTau, Inc., Santa Clara, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 1/36 (2006.01); H02H 1/00 (2006.01); H02H 9/04 (2006.01); G01R 31/319 (2006.01);
U.S. Cl.
CPC ...
G01R 1/36 (2013.01); H02H 1/0007 (2013.01); H02H 9/04 (2013.01); G01R 31/31924 (2013.01);
Abstract

A voltage limiting circuit for limiting the voltage developed across a current sensing circuit and a method are disclosed. The voltage limiting circuit includes an input terminal configured to receive an input signal from the current sensing circuit, and an output terminal configured to receive an output signal from the current sensing circuit. A voltage sense circuit is connected to the input terminal and output terminal to detect that a predefined threshold voltage is developed between the input terminal and output terminal. An activation circuit receives a signal from the voltage sense circuit to activate the voltage limiting circuit, and a level shifting circuit interfaces the voltage sense circuitry to the activation circuitry and other circuits by level shifting signals to required levels.


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