Toshiba has launched a three-phase brushless fan motor controller IC for white good, intended to increase efficiency drive and reduce noise. “Conventionally, motor control is carried out by a microcontroller and an 8-pole rotor using a rotation-control signal that delivers 3 pulses per cycle,” said the firm, “Switching from an 8-pole to 12-pole rotor achieves ...

This story continues at Sine-wave dc motor controller works with 12-pole rotor for quiet power

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