Magnetic field sensor having memory element
US7049812B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2004 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | May 31, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/07
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic field sensor including an amplifier and a magnetic field element for outputting a two-phase signal according to an applied magnetic field strength. Polarities of the two phases of the signal are mutually opposite. The amplifier amplifies the signal and outputs a resulting voltage across a pair of output terminals, which are connected to both ends of a condenser. A switch makes a connection between one of the output terminals and one end of the condenser. The switch closes in a first phase of the two-phase signal and opens in a second phase. A comparator inputting voltage across both ends of the switch converts the result of the comparison, based on a predetermined voltage, into a binary output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.