Multiplexer circuit for dual thermistor operation using a single line coupling
US8803451B2 · kind B2 · utility
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3References
18Claims
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Key dates
| Filing date | Feb 16, 2012 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Aug 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A time-multiplexed thermal sensing circuit is provided for control and sensing of two thermistors over a single line electrical coupling. The circuit may include a first diode that selectively couples or isolates a first thermistor from a sense node based on the polarity of an applied voltage to the sense node. The circuit may further include a second diode that selectively couples or isolates a second thermistor from the sense node based on the polarity of the applied voltage to the sense node such that only of the thermistors is coupled to the sense node at any time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.