Insulation inspection apparatus and insulation inspection method
US9606166B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2014 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Apr 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2805
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An insulation inspection technique for allowing the occurrence of sparks to be detected more satisfactorily and allowing a board in which sparks have occurred to be more satisfactorily detected as being detective is provided. An insulation inspection apparatus detects a voltage induced between insulation inspection target wiring patterns by the application of a voltage during a time period from the start of the voltage application between the insulation inspection target wiring patterns to a predetermined time when the voltage between the insulation inspection target wiring patterns has stabilized. When a voltage drop due to sparks occurring between the insulation inspection target wiring patterns is detected during the time period, the board to be inspected is determined to be defective. In particular, supply current during the time period is set in accordance with the number of inspection points of an upstream wiring pattern of the insulation inspection target wiring patterns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.