Measurement circuit of thin-film temperature sensor
US12222251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2020 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Sep 4, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K7/206
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measurement circuit of thin-film temperature sensor comprises: out-phase input end and output end of first operational amplifier are connected to first end of thin-film resistor; first end of first resistor is connected to output end of first operational amplifier, second end of first resistor is connected to in-phase input end of first operational amplifier; second end of first resistor is grounded via second resistor; output end of second operational amplifier is connected to first end of potentiometer; second end of the potentiometer is connected to the constant current source and in-phase input end of second operational amplifier respectively; first end of third resistor is connected to output end of second operational amplifier, second end of third resistor is connected to out-phase input end of second operational amplifier; second end of third resistor is grounded via fourth resistor; voltage value of second end of potentiometer is output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.