Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Patent
1993-07-30
1995-06-20
Karlsen, Ernest F.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
324537, 324671, G01R 3102, H01H 3104
Patent
active
054263727
ABSTRACT:
In a capacitive-probe assembly used in an automatic circuit tester (10) to sense varying electric fields that result adjacent to integrated-circuit packages (32) during tests of circuit boards (16), a spacer comprising resilient cellular material has a double-sided printed-board attached to it that provides the probe plate (52) to which the device signals are capacitively coupled. The spacer (44) is in turn mounted on a chip-probe mounting surface (30) provided by the tester's fixture (14). The result is a robust fixture assembly that is easy to manufacture.
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GenRad Inc.
Karlsen Ernest F.
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