| 摘要 |
PROBLEM TO BE SOLVED: To reduce the quantity of induction and the strength of external magnetic field by covering a wire with a magnetic body and feeding the energy, generated in an insulated wire by a flux induced in the magnetic body, back to each wire through the same transformer. SOLUTION: A wire 1 is cover with a magnetic body 3 in order to confine the generated flux therein and a voltage is induced in an insulated wire (dependent wire) surrounding the magnetic body 3. The circuit is connected with a transformer. Since the field is induced from the wire 1 only between the wire 1 and magnetic body 3, quantity of induction is reduced and the strength of external field can be reduced because the external field is shielded by the magnetic body 3. |
