#voltage_regulator__voltageregulator  a transformer whose voltage ratio of transformation can be adjusted
  supertype:  transformer  an electrical device by which alternating current of one voltage is changed to another voltage
  part of:  electrical_system__electrical_part  equipment in a motor vehicle that provides electricity to start the engine and ignite the fuel and operate the lights and windshield wiper and heater and air conditioner and radio
     part of:  motor_vehicle__motorvehicle__automotive_vehicle  a self-propelled wheeled vehicle that does not run on rails

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