A continuously variable transmission is disclosed for use in rotationally or linearly powered machines and vehicles. A temperature sensor senses a temperature of the integrated circuit. The carbon catalyst includes a carbon element, a nitrogen element, and a base metal element as constituent elements. The cooler operates based on the temperature detected by the temperature detector. The electrical-steel-sheet formed body can be used as the rotor of the built-in permanent magnet type rotary electric machine, and the built-in permanent magnet type rotary electric machine can be obtained.