Vehicle-mounted apparatus

A vehicle-mounted apparatus comprising:

• a first voltage conversion circuit configured to convert a voltage of an electric power supplied from a first electric power supply circuit, to a first predetermined voltage;
• a first control circuit configured to be operated by the electric power of the first predetermined voltage supplied from the first voltage conversion circuit, and to output a first actuator command signal;
• a first actuator configured to be actuated based on the first actuator command signal;
• a second voltage conversion circuit configured to convert a voltage of an electric power supplied from a second electric power supply circuit, to a second predetermined voltage;
• a second control circuit configured to be operated by the electric power of the second predetermined voltage supplied from the second voltage conversion circuit, and to output a second actuator command signal;
• a second actuator configured to be actuated based on the second actuator command signal;
• and
• a power cylinder including a housing and a piston, wherein:
• the housing includes a first chamber and a second chamber separated by the piston;
• the piston is configured to obtain a thrust by a pressure difference between hydraulic fluids supplied, respectively, to the first chamber and the second chamber;
• the first voltage conversion circuit and the second voltage conversion circuit are configured to transmit a heating value by heat generation, to the housing;
• the first actuator is a first electric motor configured to provide the thrust to the piston;
• and
• the second actuator is a second electric motor configured to provide the thrust to the piston.