Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshiaki Koizumi0
Kazutaka Iwata0
Date of Patent
July 20, 2021
Patent Application Number
16041495
Date Filed
July 20, 2018
Patent Citations
Patent Citations Received
Patent Primary Examiner
Patent abstract
An electric power tool includes: a brushless motor having a plurality of stator windings and configured to rotate in accordance with voltages applied to the plurality of stator windings, an induced voltage being generated in accordance with a rotation of the brushless motor; a rectifier circuit configured to rectify an AC voltage; a smoothing capacitor configured to smooth the AC voltage rectified by the rectifier circuit to a pulsation voltage having a maximum value larger than the induced voltage and a minimum value smaller than the induced voltage; and an inverter circuit configured to perform switching operations to output the pulsation voltage to the plurality of stator windings by rotation.
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