Motor apparatus for a switch drive of an electrical switch, and method for operation thereof

A motor apparatus for a switch drive of an electrical switch, the motor apparatus comprising:

• an electric motor to be operated with direct current;
• a control apparatus for controlling said electric motor, said control apparatus having:
• a rectifier unit for rectifying a supply voltage of the motor apparatus if the supply voltage is an AC voltage and for polarity reversal protection if the supply voltage is a DC voltage;
• a voltage measuring unit for capturing the supply voltage or a rectifier output voltage of said rectifier unit;
• a switching unit for generating a DC drive voltage for said electric motor from the supply voltage or from the rectifier output voltage;
• and
• a control unit for controlling said switching unit based on the supply voltage or rectifier output voltage captured by said voltage measuring unit.

A method of operating a motor apparatus, the method comprising:

• providing an electric motor to be operated by direct current;
• using a rectifier unit to rectify a supply voltage of the motor apparatus if the supply voltage is an AC voltage and to provide polarity reversal protection if the supply voltage is a DC voltage;
• acquiring with a voltage measuring unit the supply voltage of the motor apparatus or an output voltage of the rectifier unit;
• and
• using a switching unit to generate a drive voltage for the electric motor, and controlling the switching unit with a control unit on a basis of the supply voltage or rectifier output voltage acquired by the voltage measuring unit.