Ratiometric processing and driver circuit
US5920255A · kind A · utility
1Cited by
4References
42Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 29, 1997 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | Jul 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The electronic interface circuit can perform ratiometric processing and driving of a signal generated by a fuel-level detector of a vehicle. The circuit uses a current mirror configured so as to send one half of the output current to the input resistance and one half of the output current to earth. The current mirror is controlled by a voltage taken from the input resistance and by a voltage taken from a resistive divider, the latter voltage having been filtered by a low-pass filter, so as to achieve ratiometric processing of the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.