A motor for use with a power supply comprising a stator, a rotor in magnetic coupling relation to the stator, a plurality of insulated gate bipolar transistors (IGBTs), a user interface, a microcontroller and an application specific integrated circuit (ASIC). Each IGBT has a control input port and is...http://www.google.ca/patents/US6215261?utm_source=gb-gplus-sharePatent US6215261 - Application specific integrated circuit for controlling power devices for commutating a motor based on the back emf of motor
