| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric tool capable of improving a power factor without including a power factor improvement circuit.SOLUTION: An electric tool 1 comprises: a brushless motor 5 which includes a plurality of stator coils U, V and W and in which a predetermined induction electromotive voltage is generated in the case where a voltage is applied; a rectification circuit 10 which rectified an AC voltage; a smoothing capacitor 11 which smooths the rectified AC voltage into a pulsation voltage having a minimum value that is smaller than the induction electromotive voltage; and an inverter circuit 8 which performs a switching operation to output the pulsation voltage successively to the stator coils U, V and W.SELECTED DRAWING: Figure 3 |
