| 摘要 |
PROBLEM TO BE SOLVED: To provide an electroacoustic transducing element that can stably generate a high output. SOLUTION: Superconducting coils 1a, 1b are employed for a magnetic field generating means of the electroacoustic transducing element to realize high output generation for the electroacoustic transeducing element and surrounding the outside of the superconducting coils with eddy current reduction layers 2a, 2b, made of a low-resistance metal can reduce an eddy current generated in the superconducting coils, so as to avoid the occurrence of quenching.
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