Voltage detection apparatus
US9964579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2015 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Jun 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object of the present invention is to diagnose a state of a voltage divider while performing a normal measurement to improve reliability. A voltage detection apparatus according to the present invention includes: a first resistor for dividing voltage of a detection unit into a first divided voltage value; and a test pattern insertion circuit unit including a second resistor for dividing the first divided voltage value into a second divided voltage value and a switching device, wherein the test pattern insertion circuit unit is connected to an equipotential connection point to the first divided voltage value, and wherein a state of the first resistor is detected based on the second divided voltage value when the switching device is conductive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.