Pressure sensor with a hall element circuit
US4487074A · kind A · utility
12Cited by
8References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1983 |
| Grant date | Dec 11, 1984 |
| Priority date | — |
| Expiry date | Feb 22, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S73/03
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A deformable pressure chamber (10) moves a permanent magnet (12) carried by it as it is deformed. A GaAs Hall element (13) is disposed on a substrate plate (1) opposite the permanent magnet, and the substrate plate also carries a hybrid circuit including a temperature compensating network of thick film resistors and an amplifier. The Hall element is subject to only small temperature effects, and these are compensated in a circuit that can work with a low supply voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.