Printed circuit board coils, high-frequency transformers, and electromagnetic induction heating devices

Abstract

To provide a printed circuit board coil capable of increasing a current capacity and capable of suppressing an increase in high-frequency AC loss.SOLUTION: In a printed circuit board coil 1 according to the present invention, a first layer, in which a first winding pattern 101 is formed, and a second layer, in which a second winding pattern 102 is formed, overlap each other with an insulator layer 10 in between so as to constitute a coil turned two or more times. The printed circuit board coil comprises a plurality of coils 100, 200 and 300 that are constituted by using the first layers 101, 201 and 301 and the second layers 102, 202 and 302. The plurality of coils 100, 200 and 300 are stacked with the insulator layer 10 in between so that the first layers 101, 201 and 301 and the second layers 102, 202 and 302 can be alternately arranged in the direction (Z-axis direction) of stacking the first and second layers. The plurality of coils 100, 200 and 300 are connected together in parallel.SELECTED DRAWING: Figure 1

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