REACTOR

PROBLEM TO BE SOLVED: To attain a lightweight, low-priced reactor contributing to a reduction in weight of an air conditioner outdoor unit.SOLUTION: The reactor has a laminated E-type iron core 1 and a laminated I-type iron core 2 being abutted against each other, an air gap 5 for adjusting the current characteristics of inductance is formed between a central magnetic leg of the laminated E-type iron core 1 and the laminated I-type iron core 2 disposed confronting therewith, and a coil 3 is wound surrounding the central magnetic leg of the laminated E-type iron core 1 via an insulating paper 4. In the laminated E-type iron core 1 and the laminated I-type iron core 2, iron plates 1a and 2a on which an insulating coating is covered and iron plates 1b and 2b on which the insulating coating is not covered are interleaved and formed, whereby an iron core mean temperature is reduced, a heat transfer from the coil 3 to the iron core is promoted, a wire diameter of the coil 3 can be reduced, also an insulating coating thickness of the laminated iron core is thinned, and the total length of the coil 3 can be shortened. Hence, it is possible to make lightweight and low-priced.