Circuit for current measurement and current monitoring
US7075464B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 2005 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | May 26, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A circuit for current measurement and current monitoring in a motor vehicle is provided, with a measuring circuit with a first subtractor circuit, connected to a measuring resistor; an offset circuit, which is connected to the first subtractor circuit in such a way that a first output voltage of the first subtractor circuit is increased by an offset voltage; a second subtractor circuit, which is connected to the offset circuit and the first subtractor circuit in such a way that a second output voltage of the second subtractor circuit is substantially independent of the offset voltage, and a comparator circuit with at least one switching threshold, which is connected to the second subtractor circuit for comparison of the second output voltage with the at least one switching threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.