Apparatus and methods for temperature calibration and sensing
US7896545B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 2008 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Jul 18, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K15/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Some embodiments include apparatus and methods having a first switch, a second switch, and a circuit coupled to the first and second switches. The first switch may be configured to switch between an on-state and an off-state based on a value of a first current flowing through a number of resistors and a diode coupled in series with the resistors. The second switch may be configured to switch between the on-state and the off-state based on a value of a second current on a circuit path. The second current is a function of a voltage at a node between two of the resistors and a resistance of the circuit path. The circuit may be configured to provide a temperature reading based on the number of times the first switch or the second switch switches between the on-state and the off-state during a time interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.