| 摘要 |
PROBLEM TO BE SOLVED: To reduce a noise terminal voltage without increasing a twist number of a power source lead wire or adding a capacitor. SOLUTION: A rib 28 is extended from a bottom surface of a coil cover 15 downward, and a power source lead wire 27 is supported. The power source lead wire 27 is set apart from an induction heat coil for a constant distance. Magnetic flux density of an alternating field generated by the induction heat coil gets smaller as distance from the induction heat coil is larger. A voltage induced at the power source lead wire 27 by the alternating field generated by the induction heat coil, that is a noise terminal voltage, can thus be reduced.
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