CIRCUIT BOARD INSPECTION APPARATUS, CIRCUIT BOARD INSPECTION METHOD AND CIRCUIT BOARD INSPECTION TOOL
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United States of America Patent
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Issued Date -
Dec 4, 2014
app pub date -
Jun 3, 2014
filing date -
Jun 4, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A circuit board inspection apparatus configured to perform electrical inspection of wiring patterns formed on a circuit board with a built-in electronic component is provided with a plurality of contactors, a switching circuit, and a controller. The controlling device applies voltage by using a power supply between a contactor and a contactor in a state a switch of the switching circuit is set to be ON and inspects an insulating state between two wiring patterns corresponding to two inspection points on the circuit board. At this time, if forward bias is applied to and forward current flows in diodes inserted between the contactors outside the circuit board, a potential difference between the contactors becomes equal to a potential difference between the diodes and is limited to a relatively small value.
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