Device for evaluating periodic signals from inductive pick-ups having a pulse former stage influenced as a function of the pick-up signal amplitude

US5317258A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Jurgen Setzer · Mühlacker, DE
• Hans-Juergen Braun · Ueberstorf, CH
• Hermann Stein · Taunusstein, DE

Key dates

• Filing date: Sep 21, 1992
• Grant date: May 31, 1994
• Expiry date: Sep 21, 2012

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03K5/084
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device for evaluating periodic signals from inductive pick-ups compensates for the lag of the pick-up signal. This lag increases with increasing frequency as a consequence of the inductance of the pick-up, with respect to the position of a movable part that is to be scanned by the said pick-up. The relative time shift in the evaluation edge of the pick-up signal, which is phase-compensated via the frequency, is compensated for via changes in the amplitude of the pick-up signal.