Patent ID: 6838849
Filing Date: 2005-01-04
Classification: H02P

Abstract:
1. A brushless dc motor, comprising: a motor rotor having at least one magnet set; a motor stator having at least one pole set corresponding to the magnet set of the motor rotor; a first motor coil wound on the motor stator; a second motor coil wound on the motor stator and serially connected to the first motor coil; a first sensor/drive member connected to a power source to obtain a first voltage and to supply a second voltage, and further connected to the first motor coil, the first sensor/drive member conducts the first motor coil in full wave by the first voltage according to a first Hall signal detected by the first sensor/drive member; and a second sensor/drive member serially connected to the first sensor/drive member to obtain the second voltage, and further connected to the second motor coil, the second sensor/drive member is adapted to conduct the second motor coil in fill wave by the second voltage according to a second Hall signal detected by the second sensor/drive member; wherein the first sensor/drive member and the second sensor/drive member are commonly operated so that the first motor coil and the second motor coil are alternatively excited to thereby rotate the motor rotor.