Electricity: measuring and testing – Electromechanical switching device
Reexamination Certificate
2011-02-01
2011-02-01
He, Amy (Department: 2858)
Electricity: measuring and testing
Electromechanical switching device
C324S537000
Reexamination Certificate
active
07880470
ABSTRACT:
A test apparatus for a device under test (DUT) that includes a signal output device that outputs a signal according to a test signal and a detecting section that detects a signal output from the DUT that outputs a detection result. The signal output device includes an output port, a high-voltage side switching circuit between a first terminal and a second terminal, a low-voltage side switching circuit between a first terminal and a second terminal, and a control section that outputs the first and second control signals. Each of the high-voltage and the low-voltage side switching circuits include a plurality of switching devices serially connected between the first and second terminals. The plurality of switching devices are opened substantially in synchronization with each other, such that a voltage inputted to the first terminal is outputted from the second terminal by short-circuiting between the first and second terminals.
REFERENCES:
patent: 6441513 (2002-08-01), Mulhauser
patent: 6836159 (2004-12-01), Wodnicki
patent: 2004/0207454 (2004-10-01), Hidaka et al.
Korean Office Action for application No. 10-2008-0029281, dated Feb. 22, 2010, and English translation thereof, 8 pages.
Advantest Corporation
He Amy
Osha & Liang LLP
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