Single channel electrical comparative measuring system
US4091683A · kind A · utility
14Cited by
5References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1976 |
| Grant date | May 30, 1978 |
| Priority date | — |
| Expiry date | Sep 27, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L9/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measuring system based on using a ratio of variable capacitance measurements derived from alternate sampling and referencing of at least two capacitance devices and use of a single channel for the capacitance outputs so that the measurements are basically independent of the circuit components, supply voltage, temperature drift problems. The measurements can be high resolution digital signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.