AC/DC closed-loop current sensor
US11927608B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2023 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Sep 18, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure relates to an AC/DC closed-loop current sensor, including a magnetism gathering iron core, a TMR chip, a signal processing circuit, a signal generator, and a feedback coil. The TMR chip is arranged at an air gap of the magnetism gathering iron core and connected to the signal processing circuit. The signal processing circuit is connected to the signal generator. The feedback coil is wound around the magnetism gathering iron core and connected to the signal generator. The signal processing circuit is configured to select from the induced signal of the TMR chip and make an amplification to obtain a current signal component and send the current signal component to the signal generator. The signal generator is configured to adjust a current output to the feedback coil based on the current signal component, and output a measurement result of the selected current signal component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.