POWER TOOL INCLUDING A HIGH SPEED MOTOR

A power tool including a housing, a battery pack interface configured to receive a battery pack, and electric motor within the housing, a controller, and a Hall effect sensor. The electric motor has a no-load operating speed of at least 35,000 rotations per minute ("RPM"). The electric mot...

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Bibliographische Detailangaben
Hauptverfasser: PAULSEN, Alexander J, BOTHE, Erik P, WOOD, Jacob G, YPMA, Carter H, HANKINS, Nathan D
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A power tool including a housing, a battery pack interface configured to receive a battery pack, and electric motor within the housing, a controller, and a Hall effect sensor. The electric motor has a no-load operating speed of at least 35,000 rotations per minute ("RPM"). The electric motor includes a stator including a stator core having stator teeth and stator laminations, and a rotor including a rotor shaft and a rotor magnet. The controller is configured to control an operating speed of the electric motor. The Hall effect sensor is connected to the controller and is configured to transition between a low-level output signal and a high-level output signal in response to sensing the rotor magnet. The Hall effect sensor is configured to transition between the low-level output signal and the high-level output signal at a maximum transition time of less than a millisecond.