Variable attenuation circuit for a differential variable reluctance sensor using current mode
US6040692A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | May 18, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/488
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A variable reluctance sensor interface module having a variable attenuation circuit and a rectifier and differential to single-ended conversion circuit for operating in a current mode to attenuate a differential input voltage. The variable attenuation circuit receives an input differential voltage from a magnetic sensor and converts the differential voltage to current. First and second current sourcing circuits, each including a plurality of current sourcing branches, receive the current and provides variable current attenuation by switching in and out transistor-based current sourcing branches. The rectifier and differential to single-ended conversion circuit converts the variably attenuated currents to a voltage output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.