Simplifying BLDC commutation and feedback system Design How-To 3/31/2009 Post a comment In a Brushless DC (BLDC) motor system, an electronic mechanism
is required to commutate the system. Unlike a Brush DC motor system,
the permanent magnet is located at the Rotor and the windings are
located at the Stator. As a result of this setup arrangement, the
windings are required to energize in sequence, to enable smooth
commutation. For the electronic system to determine which windings to
energize, Hall sensor feedback is used to get the current location of
the windings with respect to the
Mobile operators seal, extend network sharing deals News & Analysis 3/23/2009 Post a comment In a wide-ranging cost cutting deal that will have major implications for their equipment suppliers, and further down the chain for many component suppliers, Vodafone and Telefonica have confirmed they will pool their mobile networks in the U.K and said that the deal covers several other European countries.
Making Automotive DC-motor driving simple and safe Design How-To 3/5/2009 Post a comment An increasing number of high-power DC motors are used in many automotive applications. Being smaller and lighter than previous versions, they have to draw higher currents in order to offer a suitable torque. The article describes a highly integrated MOSFET H-bridge for this purpose.
Battle-hardened veterans of the electronics industry have heard of the “connected car” so often that they assume it’s a done deal. But do we really know what it takes to get a car connected and what its future entails? Join EE Times editor Junko Yoshida as she moderates a panel of movers and shakers in the connected car business. Executives from Cisco, Siemens and NXP will share ideas, plans and hopes for connected cars and their future. After the first 30 minutes of the radio show, our listeners will have the opportunity to ask questions via live online chat.