Circuit arrangement and method for monitoring a current circuit
US7005859B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Jun 21, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R35/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A circuit arrangement and a method are described with which a current circuit can be monitored for correct function. A first and a second current sensor are provided in the current circuit. In a test phase, the second current sensor is switched to the current circuit. Next, a current flow is brought about through the first and the second current sensors, and the current intensity is measured via the first and second current sensors. From a comparison, an error function of the current sensor can be detected. The circuit arrangement according to the invention and the method according to the invention are particularly suitable for use in safety-oriented equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.