Advanced motor-control techniques are a practical necessity because they enable more efficient and quieter appliances. In the past, these advanced control techniques were only available as proprietary solutions, and hence were limited in scope to a few high-end appliances. Given the drive toward efficient appliances running on “green” power, which is mandated by regulations and customer preferences, these motor-control algorithms are now being sought by designers of all classes of appliances. Thanks to the new generation of digital-signal-controllers (DSCs), the cost-effective implementation of advanced motor-control algorithms has become a reality.