Electrical circuit for sensors requiring a variety of bias voltages
US6121823A · kind A · utility
2Cited by
8References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1999 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Mar 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D3/032
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrical circuit provides a variety of stable and reliable bias voltages to accommodate the bias requirements of various sensor types. The electrical circuit comprises a programmable analog circuit capable of maintaining a plurality of programmable threshold voltages and producing a plurality of intermediary voltages. Such voltages act as an input to a differential amplifier that outputs a bias voltage within a range consistent with said programmable threshold voltages. The bias voltage is further conditioned by a conditioning amplifier that further stabilizes the bias voltage to an attached sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.