Inductance adjusting device

An inductance adjusting device that adjusts an inductance of an electric circuit, the inductance adjusting device comprising:

• a first coil having a first circumferential portion, a second circumferential portion, and a first connecting portion;
• and
• a second coil having a third circumferential portion, a fourth circumferential portion, and a second connecting portion, wherein
• the first circumferential portion, the second circumferential portion, the third circumferential portion, and the fourth circumferential portion each are a portion circling so as to surround an inner region thereof,
• the first connecting portion is a portion that connects one end of the first circumferential portion and one end of the second circumferential portion mutually,
• the second connecting portion is a portion that connects one end of the third circumferential portion and one end of the fourth circumferential portion mutually,
• the first coil and the second coil are connected in series or parallel,
• the first circumferential portion and the second circumferential portion exist on the same plane,
• the third circumferential portion and the fourth circumferential portion exist on the same plane,
• a set of the first circumferential portion and the second circumferential portion and a set of the third circumferential portion and the fourth circumferential portion are arranged in a parallel state with an interval provided therebetween,
• at least one of the first coil and the second coil rotates about a shaft of the first coil and the second coil as a rotation shaft,
• the shaft is a shaft passing through a middle position between the center of the first circumferential portion and the center of the second circumferential portion and a middle position between the center of the third circumferential portion and the center of the fourth circumferential portion,
• the first circumferential portion and the second circumferential portion are arranged so as to maintain a state where at least one of the first coil and the second coil is displaced by 180° in terms of angle in a rotation direction, and
• the third circumferential portion and the fourth circumferential portion are arranged so as to maintain a state where at least one of the first coil and the second coil is displaced by 180° in terms of angle in the rotation direction.