Method for determining an electrical parameter and measurement arrangement for determining an electrical parameter

US11243237B2 · kind B2 · utility

Assignee

• Sciosense B.V. · NL

Inventors

• Friedrich Bahnmueller · Karlsruhe, DE
• Ulf-Thore Glindemann · Rußheim, DE

Key dates

• Filing date: Jul 5, 2018
• Grant date: Feb 8, 2022
• Expiry date: Oct 16, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R27/02
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In an embodiment a method for determining an electrical parameter includes charging, in parallel, a first capacitor and a second capacitor from a common supply voltage, measuring a first discharge time by discharging the first capacitor using a comparator and a time-to-digital converter that is connected to an output of the comparator and that provides a digital output signal, measuring a second discharge time by discharging the first capacitor a second time or by discharging the second capacitor using the comparator and the time-to-digital converter and determining the electrical parameter from a ratio of the first and second discharge times.