Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2007-08-17
2010-02-09
Nguyen, Ha Tran T (Department: 2829)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
Reexamination Certificate
active
07659742
ABSTRACT:
Features of non-vacuum AC/DC probe systems are combined with features of the DC vacuum chamber testers to provide an AC/DC probe system that can be used in a vacuum environment, such as a SEM vacuum chamber. Features of the DC vacuum chamber tester are modified to include new op-amp circuitry that provides the AC/DC testing functionality of the non-vacuum chamber systems, resulting in an AC/DC probe system that can be used in a vacuum environment.
REFERENCES:
patent: 5321363 (1994-06-01), Wakamatsu et al.
patent: 5742172 (1998-04-01), Yasutake
patent: 6211686 (2001-04-01), Matsuzawa et al.
patent: 6888135 (2005-05-01), Naitou et al.
Gemmill Zachary
Jacobson Steven
Nguyen Duc huu
Dergosits & Noah LLP
National Semiconductor Corporation
Nguyen Ha Tran T
Nguyen Tung X
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