By Kai-Uwe Veregge, Jenaer Antriebstechnik GmbHTHIS PAPER shows that beside the advantages of more power per volume and higher speed of today’s state-of-the-art brushless DC motors, the push in microelectronics gives motor constructions like hybrid steppers a comeback on motion control -- not in the general scene, but in those niche markets where the cost-performance-reliability (CPR) requirements have to be optimized. “There's life in the old dog, yet”.