Patent · US Active

Circuit arrangement for operating at least one relay

US10896794B2 · kind B2 · utility

0Cited by

2References

11Claims

0Family size

Assignee

Pilz GmbH & Co. KG · DE

Inventors

Jürgen Pullmann · Großenhain, DE
Bernd Neuschwander · Esslingen am Neckar, DE
Frieder Scharpf · Esslingen am Neckar, DE

Key dates

Filing date	Feb 9, 2018
Grant date	Jan 19, 2021
Priority date	—
Expiry date	Nov 5, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG01P15/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A circuit arrangement comprises: an electronic switch; at least one relay including a relay coil; a shunt resistor; a voltage supply device to supply an operating voltage to the at least one relay, wherein the electronic switch, the relay coil of the at least one relay, and the shunt resistor are electrically connected in series to one another between the operating voltage and ground; a current regulator to drive the electronic switch with a pulse width modulation to adjust a control current that flows through the relay coil; at least one sensor to generate sensor data indicative of shocks, impacts or vibrations acting on the at least one relay; and an evaluating unit to evaluate the sensor data, wherein the current regulator is configured to adjust the control current based on the sensor data evaluated by the evaluating unit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.