| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for protecting simply an electric product from an effect of an i wave(iodine magnetic field light beam). SOLUTION: A free beam (apparatus for generating a light beam for freedom) is built into each of electric products. A B circuit having a function of the electric product is contained in an A circuit of a free beam. COPYRIGHT: (C)2007,JPO&INPIT
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