Pulse shaper for inductive pickups having a voltage controlled differential voltage divider
US5029286A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1989 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Apr 12, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/481
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pulse shaper for inductive pickups, in particular for inductive speed pickups or angle of rotation pickups on internal-combustion engines, is proposed, which has a voltage controlled voltage divider (14, 17, 19) at its input. A level adaptation takes place of the signal delivered by the inductive pickup (10) to a Schmitt trigger stage (44), at the output (57) of which a voltage jump occurs whenever the signal delivered by the pickup (10) rises above a certain value and falls below a certain value. The voltage divider at the input of the pulse shaper is formed by a resistor (14) and a first and second diode (17, 19), the differential resistance of which can be set by controlled voltage sources (24, 28). The special advantage of the circuit is that no higher voltage than the operating voltage of the pulse shaper can occur after the resistor 14 at the input. The pulse shaper is ideally suited for integration, as only easily integratable components are contained in the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.