Armature-mounted electonics govern brushless motor.(Designer's corner: technology you can use) From: Design News | Date: February 3, 2004 | COPYRIGHT 2004 Reed Business Information. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

Rather than a commutator, the patented DynaMotor[TM] electronic brushless repulsion (EBR) motor uses controlling electronic switches on a circuit board on the rotor shaft that turns with the armature. Photo detectors, located on the rotating board that move past infrared LEDs mounted on the stationary portion of the motor short circuit the switches to form a closed armature winding. The torque, speed, and direction of rotation depends on the duration of the light pulse triggering t...