POSITION SENSING CIRCUIT FOR BRUSHLESS MOTORS
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United States of America Patent
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Issued Date -
Oct 4, 2012
app pub date -
Mar 30, 2011
filing date -
Mar 30, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A position sensing circuit (14) for a brushless electric motor (10) is described. The position sensing circuit (14) comprises an input (16) adapted to receive a voltage induced by a rotor (1) in at least one winding (L1, L2 and L3) of the stator (2) when that winding is not driven; and a detection device (18) inductively coupled to the input (16) and configured to generate a signal representative of a position of the rotor (1) in relation to the stator (2) based on the induced voltage.
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