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.
In conjunction with unveiling of EE Times’ Silicon 60 list, journalist & Silicon 60 researcher Peter Clarke hosts a conversation on startups in the electronics industry. One of Silicon Valley's great contributions to the world has been the demonstration of how the application of entrepreneurship and venture capital to electronics and semiconductor hardware can create wealth with developments in semiconductors, displays, design automation, MEMS and across the breadth of hardware developments. But in recent years concerns have been raised that traditional venture capital has turned its back on hardware-related startups in favor of software and Internet applications and services. Panelists from incubators join Peter Clarke in debate.