Self checking temperature sensing circuit
US5748429A · kind A · utility
14Cited by
9References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Sep 9, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K15/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A self-checking temperature sensing circuit in which temperature sensitivity is provided by first and second resistive elements having positive and negative temperature coefficients respectively. The resistive elements are connected in parallel current paths, one of which includes a diode for allowing only unidirectional current flow. The resistances of the restrictive elements are determined by a circuit which periodically reverses the polarity of a voltage applied across the parallel paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.