Excitation circuitry for variable reluctance transducer
US4244108A · kind A · utility
2Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1979 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | Nov 19, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/001
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Improved excitation circuitry for a variable reluctance transducer is disclosed which includes a transformer having a primary winding and a secondary winding. Power circuitry coupled to the primary winding induces an AC excitation signal in the secondary winding which is coupled to the transducer. An error detection circuit compares a reference signal with the excitation signal and feeds back an error signal to the power circuitry to compensate for any differences therebetween. In such manner, a constant excitation signal is maintained for the transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.