Soft start for electric motor of a power tool

A power tool has an electric motor with field windings. Each field winding includes two coils. When the motor is first energized, the two coils of each field winding are connected in series, reducing in-rush current. Upon expiration of a soft start period, the two coils of each field winding are con...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Zhao, Peter, Du, Hung T, McCormick, Garrett P
Format: Patent
Sprache:eng
Online-Zugang:Volltext bestellen
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