Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1995-06-07
1996-10-22
Regan, Maura K.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324537, G01R 2708
Patent
active
055680550
ABSTRACT:
A method for detecting and locating constrictions in electrical conductors of predetermined normal cross-section. A test or reference resistance reading is made and stored pursuant to application of a test current, a stress current is applied, heating any constriction in the conductor, a resistance reading is taken immediately after the heating has taken place and the respective resistance readings are compared to determine the presence or absence of a constriction or weak spot. The disclosure also includes an exemplary circuit to implement the method. In an alternative embodiment, a second test current is applied immediately after the stress current.
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International Business Machines - Corporation
Regan Maura K.
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