Abstract: To provide improved overvoltage protection for a voltage converter for converting an input voltage into a DC output voltage, a first switch-off unit is provided, which is configured to effect a switch-off of at least a part of the voltage converter if the DC output voltage reaches or exceeds a first voltage threshold, in order to reduce the DC output voltage. Furthermore, a second switch-off unit is provided, which is configured to check whether a mean value of the DC output voltage reaches or exceeds a mean value threshold and, if the mean value threshold is reached or exceeded, to effect a switch-off of at least a part of the voltage converter in order to reduce the DC output voltage.

Abstract: A more efficient power supply system comprises a rectifier, a low voltage inverter, and a low voltage actuator, the rectifier converting a mains AC voltage into a low input DC voltage, the low voltage inverter connected to the rectifier and converting the low input DC voltage into a low supply AC voltage, and the low voltage inverter connected to the low voltage actuator to supply the low voltage actuator with power via the low supply AC voltage. A DC-DC converter connected to the rectifier converts the low input DC voltage into an extra-low DC voltage. An extra-low voltage inverter connected to the DC-DC converter converts the extra-low DC voltage into an extra-low supply AC voltage. The extra-low voltage inverter connected to an extra-low voltage actuator supplies the extra-low voltage actuator with power via the extra-low supply AC voltage.

Abstract: A a more efficient power supply system comprises a rectifier, a low voltage inverter, and a low voltage actuator, the rectifier converting a mains AC voltage into a low input DC voltage, the low voltage inverter connected to the rectifier and converting the low input DC voltage into a low supply AC voltage, and the low voltage inverter connected to the low voltage actuator to supply the low voltage actuator with power via the low supply AC voltage. A DC-DC converter connected to the rectifier converts the low input DC voltage into an extra-low DC voltage. An extra-low voltage inverter connected to the DC-DC converter converts the extra-low DC voltage into an extra-low supply AC voltage. The extra-low voltage inverter connected to an extra-low voltage actuator supplies the extra-low voltage actuator with power via the extra-low supply AC voltage.