Circuit arrangement for operating at least one relay

A circuit arrangement comprising:

• 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 acceleration sensor to detect an acceleration acting on the at least one relay in at least one spatial direction and 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 to determine a jerk (j) prevailing in a region of the at least one relay by differentiating measured acceleration values over time, wherein the current regulator is configured to adjust the control current based on the sensor data evaluated by the evaluating unit.