Transducer bridge circuit arrangement and method
US4261195A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1979 |
| Grant date | Apr 14, 1981 |
| Priority date | — |
| Expiry date | Feb 21, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L1/2268
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transducer bridge circuit arrangement which may include a plurality of individual bridge circuits is improved by standardizing the source resistance and open circuit sensitivity of each bridge circuit in a group of such circuits. For this purpose a small resistor is connected in series with one or both output terminals of each individual bridge circuit, or resistors may be inserted in series with the bridge excitation terminals. Thus, the output signal sensitivity and source resistance are adjusted to a standard ratio value and the prior art adjustment for so-called corner sensitivity in electronic scales has been eliminated or at least substantially reduced where strain gauge load cells are employed in multiple transducer installations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.