Circuit board inspecting apparatus and circuit board inspecting method
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United States of America Patent
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Jan 23, 2018
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app pub date -
Jun 1, 2015
filing date -
Jun 2, 2014
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Abstract
A circuit board inspecting apparatus is disclosed for inspecting a circuit board having wiring patterns separated from each other and forming a plurality of wiring pattern pairs. The apparatus includes a low-voltage inspection part to apply a first low-potential difference below a threshold voltage between wiring patterns in a first of the plurality of wiring pattern pairs, and to detect a first current flowing therebetween. A resistance measurement part is provided to measure a first resistance value between the wiring patterns of the first wiring pattern pair upon detection of the first current and a high-voltage inspection part is configured to selectively apply, based on the first resistance value, a high-potential difference above said threshold voltage, between the wiring patterns in a second of said plurality of wiring pattern pairs.
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