Temperature dependent power supply for use with a bridge transducer
US5053692A · kind A · utility
27Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1990 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Apr 9, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/907
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to compensate for the effects of temperature variations on a transducer such as a piezo-resistive bridge, the bridge is fed from a temperature dependent power supply circuit. The power supply circuit comprises a temperature sensitive element with first and second adjustment means for adjusting the slope of supply voltage for the transducer against temperature on first and second sides, respectively, of a predetermined temperature. The second adjustment means provides an adjustment which is independent of the first adjustment means so that repeated temperature cycling during calibration is unnecessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.