| 摘要 |
PROBLEM TO BE SOLVED: To provide a power tool small and low in electromagnetic noise by realizing space saving by eliminating an inductor for noise prevention which is a separate part. SOLUTION: This power tool has a field, a rotor 5 and a metallic housing 8 to support the rotor 4 and constitutes its characteristic feature of preventing the electromagnetic noise by winding a coil 4 separately from a field coil 2 to generate a main magnetic flux around a field core and connecting the coil 4 between an earth cable 9 and the housing 8. COPYRIGHT: (C)2006,JPO&NCIPI
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