To provide an induction apparatus which comprises a core whose gap can be formed easily.

A fixing member 22 inserted inside a coil 20 into which a first magnetic leg 15 and a second magnetic leg 19 is inserted is configured by a belt-shaped part 23 and a pair of gap forming pieces 24 and 25 which are integrally formed in the side edges 231 and 232 of the belt-shaped part 23. The gap forming pieces 24 and 25 form a gap G1 between the tip surfaces 151 and 191. A fixing member 26 inserted inside a coil 21 into which a second magnetic leg 16 and a first magnetic leg 18 is inserted is configured by a belt-shaped part 27 and a pair of gap forming pieces 28 and 29 which are integrally formed in the side edges 271 and 272 of the belt-shaped part 27. The gap forming pieces 28 and 29 form a gap G2 between the tip surfaces 161 and 181.