Temperature sensing apparatus
US4164147A · kind A · utility
6Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1977 |
| Grant date | Aug 14, 1979 |
| Priority date | — |
| Expiry date | Dec 30, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K7/343
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature sensor particularly adapted for use with digital displays or controls comprises an oscillator circuit coupled to a capacitor formed of ferroelectric material in order to provide a linear relation of frequency with temperature. Both chip and multilayer capacitors are shown to be useful as the sensing element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.