Diagnosable reverse-voltage protection for high power loads
US8508898B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2012 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Apr 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/0822
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods of diagnosing a condition of a reverse-voltage protection switch in an electric system. The electric system includes a power source, an electric load, and a reverse-voltage protection switch in a series-type configuration. The electric system further includes a ground switch configured to selectively connect the source terminal of the reverse-voltage protection circuit to ground. The terminals of the reverse-voltage protection circuit are disconnected from the power source. The ground switch is closed to connect one terminal of the reverse-voltage protection switch to ground. A bias voltage is applied to the other terminal of the reverse-voltage protection switch and the reverse-voltage protection switch is opened. An improper short-circuit condition across the reverse-voltage protection switch is detected when the voltage at the biased terminal of the reverse-voltage protection switch is less than a threshold when the reverse-voltage protection switch is opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.