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Class Information
Number: 324/528
Name: Electricity: measuring and testing > Fault detecting in electric circuits and of electric components > For fault location > By applying a test signal > Tracing test signal to fault location
Description: Subject matter where an applied test signal undergoes a change at the location of the fault.

Sub-classes under this class:

Class Number Class Name Patents
324/529 Using a magnetic field sensor 170
324/530 Using an electric field sensor 67

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8669767 Sub-symbol rate cable tester Mar. 11, 2014
8560991 Automatic debugging using automatic input data mutation Oct. 15, 2013
8552709 Systems and methods for locating a circuit Oct. 8, 2013
8548760 Detecting nonlinearity in a cable plant and determining a cable length to a source of the nonlinearity Oct. 1, 2013
8531804 Apparatus and method for ground fault detection and location in ungrounded elecrical systems Sep. 10, 2013
8525542 Short circuit detection device Sep. 3, 2013
8513952 Sub-symbol rate cable tester Aug. 20, 2013
8482291 Substrate structure Jul. 9, 2013
8395403 Semiconductor device and defect analysis method for a semiconductor device Mar. 12, 2013
8339272 Circuit breaker locator Dec. 25, 2012
8269505 Locating short circuits in printed circuit boards Sep. 18, 2012
8253420 Integrated electrical circuit and test to determine the integrity of a silicon die Aug. 28, 2012
8154303 Method for locating cable impairments Apr. 10, 2012
8154400 System comprising a plurality of electrical switches, especially for a magnetic levitation railway line Apr. 10, 2012
8143900 Communication system fault location using signal ingress detection Mar. 27, 2012
8085517 Apparatus and method for ground fault detection and location in electrical systems Dec. 27, 2011
8050002 Housing arrangement for fault determination apparatus and method for installing the same Nov. 1, 2011
8044667 Failure detection for series of electrical loads Oct. 25, 2011
8006156 Method of generating test condition for detecting delay faults in semiconductor integrated circuit and apparatus for generating the same Aug. 23, 2011
8000519 Method of metal pattern inspection verification Aug. 16, 2011
7880476 Method to and apparatus for detecting and locating a fault in an electrical conductor wire Feb. 1, 2011
7881801 Medical device testing apparatus Feb. 1, 2011
7853848 System and method for signature-based systematic condition detection and analysis Dec. 14, 2010
7844873 Fault location estimation system, fault location estimation method, and fault location estimation program for multiple faults in logic circuit Nov. 30, 2010
7836366 Defect localization based on defective cell diagnosis Nov. 16, 2010
7779375 Design structure for shutting off data capture across asynchronous clock domains during at-speed testing Aug. 17, 2010
7685542 Method and apparatus for shutting off data capture across asynchronous clock domains during at-speed testing Mar. 23, 2010
7679371 Advanced time domain reflection cable testing Mar. 16, 2010
7636903 Device and method for testing an electric circuit Dec. 22, 2009
7603243 Method and error location in branched low voltage and medium voltage networks and evaluation circuit used thereof Oct. 13, 2009
7557723 System and method for evaluating ground-fault circuit interrupters Jul. 7, 2009
7543198 Test data reporting and analyzing using data array and related data analysis Jun. 2, 2009
7468871 Residual current devices Dec. 23, 2008
7439747 Location of high resistance ground faults on buried power-cables Oct. 21, 2008
7423545 Failed filter arrest indicator and method for use in multiple arrester location Sep. 9, 2008
7424417 System and method for clock domain grouping using data path relationships Sep. 9, 2008
7403129 Electrical switching apparatus and method employing acoustic and current signals to distinguish between parallel and series arc faults Jul. 22, 2008
7363560 Circuit for and method of determining the location of a defect in an integrated circuit Apr. 22, 2008
7358750 Inspection apparatus for printed board Apr. 15, 2008
7319334 Apparatus and method of inspecting breakdown of conducting wire Jan. 15, 2008
7299437 Method and apparatus for detecting timing exception path and computer product Nov. 20, 2007
7262603 System and method for sensing the formation of tin whiskers Aug. 28, 2007
7227364 Test circuit for and method of identifying a defect in an integrated circuit Jun. 5, 2007
7211994 Lightning and electro-magnetic pulse location and detection for the discovery of land line location May. 1, 2007
7148696 Electrical switching apparatus and method including fault detection employing acoustic signature Dec. 12, 2006
6998994 Failed filter arrest indicator and method for use in multiple arrester location Feb. 14, 2006
6995568 Method for fault tracing in electronic measurement and test arrangements for electrochemical elements Feb. 7, 2006
6982556 System and method for classifying defects in and identifying process problems for an electrical circuit Jan. 3, 2006
6972573 Device and method for inspecting circuit board Dec. 6, 2005
6944937 Method of reducing ESD damage in thin film read heads which enables measurement of gap resistance Sep. 20, 2005

1 2 3

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