Designers are always on the lookout for semiconductors and algorithms that help to boost the efficiency of appliances with a minimum addition to the overall system cost. Motor-control systems need to compensate for system input changes and can use control algorithms to ensure the efficient operation of the motor. Using advanced algorithms, such as a field oriented control (FOC), motor torque can be controlled dynamically, keeping it constant within the rated speed range (see Figure 1). Toward this, the most commonly used motor-control loop is the Proportional Integral Derivative (PID) controller, which comprises error calculation (reference minus measured variable), compensator (controller), and output generation to the system.
Consumer electronics manufacturers must develop completely different television receiver product designs for different countries or regions. The standards and technologies for television reception vary considerably so it has been impractical to consider a single flexible design covering multiple standards or regions. However, new technologies are emerging which will make it possible to have a single product design address multiple countries or regions.
Years ago I ditched my 9600 bps modem, but I still rely on dial-up modems. Those modems exist in automated teller machines, gasoline pumps, traffic controllers, medical instruments, security systems, point-of-sale (POS) equipment, and other devices. According to several sources, dial-up modems still provide the largest number of access points to the Internet. Fortunately, several OEM vendors supply dial-up modem modules that offer drop-in communications in small packages.
Backplanes serve as the central nervous system in a great many electronic products from industrial controls to telephone exchanges. In a typical backplane, front-side connectors hold boards in place and conduct signals from board to board and to I/O connectors. Without carefully designed backplanes, engineers could not extend the state of the art in computer and communication equipment. Engineers can buy off-the-shelf backplanes for a variety of standard buses such as VME, VME64, VME64x, CompactPCI (cPCI), PCI Express and even for an older bus such as STD-32. If necessary, they can customize a standard backplane or create one of their own.
Sensoray announced the addition of the model 335 to their PC/104 line of products,. The PC/104+ module supports CardBus and PC cards (PCMCIA). It will support two Type I or Type II 32 bit PC cards or one Type III allowing the expansion of additional functions such as: 10/100/1000 Mbps wireless Ethernet adapters, biometrics readers, Bluetooth cards and GPS cards.
National Semiconductor Corporation introduced what is said to be the industry’s first common-anode, current-mode, high-brightness light-emitting diode (LED) driver with pulse-width modulation (PWM) dimming. The LM3433 drives high-power, high-brightness LEDs in backlighting, projector and solid-state lighting applications.
Energy News: Congratulations to the students of Technishe Universität Darmstadt for winning the 2007 Solar Decathlon's top prize of US $100,000. The event involved students from 20 schools who all brought solar-powered homes to the National Mall in Washington, D.C. There are beautiful pictures and videos but here are some of mine from
Schaefer, Inc. introduced the C300 Series of 150W DC/DC Converters, AC/DC Power Supplies. The C300 DC/DC product line boasts 7 DC input ranges of 10V to 16V, 18V to 36V, 36V to 75V, 45V to 90V, 80V to 160V, 160V to 320V, and 320V to 380V with 10 single output voltages ranging from 5V DC to 220V DC. The C300 AC/DC Series offers the same range of output voltages from a choice of 110V AC, 230V AC, or 115V AC to 230V AC inputs.
SMSC has addressed limited bandwidth and distance issues for networking technology in the home with a device that distributes multiple high definition (HD) TV streams simultaneously. Its LAN9131 is a wired Ethernet multimedia co-processor that currently supports DLNA guidelines. Because authentication and encryption processing have become essential when transferring copyright protected digital content between devices.
Xceive’s next generation silicon tuner, the XC5000, is optimized for large screen hybrid televisions, is an alternative to conventional CAN tuners and provides desirable sensitivity, adjacent channel, phase noise and dynamic range. For analog televisions, the tuner meets an unweighted signal-to-noise-ratio of 54 dB and a noise figure of </6>
AVX Corporation has designed a ceramic capacitor that virtually eliminates the risk of short-circuit failure, according to the company. Terminated with the company’s FLEXITERM technology introduced last year, the capacitors are designed to absorb shock and prevent internal cracking due to board flexure and temperature cycling damage. The components are also structured with a cascade electrode design (effectively two capacitors in series within one MLCC)
Products that operate over a wide temperature range can take advantage of the Winsystems PPM-GX, a PC/104-Plus-compatible single-board computer (SBC) based on the AMD GX500 processor which runs x86-compatible software. This SBC works with PC/104 and PC/104-Plus I/O modules and operates between -40° to +85°C without the need for a fan. The board offers the CPU and video, LPT, mouse, audio and keyboard controllers
The small packages -- down to 6×6 mm -- Microchip Technology uses for its newest PIC24F 16-bit microcontroller family do not compromise memory or I/O capabilities. The chips, available in 28- and 44-pin QFN packages, include 16 Kbytes to 64 Kbytes of flash program memory and as many as 8 Kbytes of SRAM. The PIC24FJ64GA004 family lets developers use a pin-mapping function to connect I/O devices to specific MCU pins as needed.
Hi-Tech Software has announced a new compilation technology that generates object code based on call- and pointer-reference graphs derived from all the modules in an embedded program. The new technology, called Omniscient Code Generation (OCG), overcomes problems in conventional compilers that can miss inconsistent calling conventions, variable declarations and redundant code because they compile each module independently and separately. OCG results in more easily ported code that is nearly 50 percent more dense than code from competing compilers.
The XPedite 8070 high performance 3U VPX-REDI single board computer (SBC) from Extreme Engineering Solutions is appropriate for ruggedized systems requiring high bandwidth processing and low power consumption. With two P.A. Semi PA6T cores running at up to 2 GHz while dissipating <17W, the PA6T-1682 provides desirable performance-per-Watt. The P.A. Semi PA6T-1682 PWRficient integrated platform processor combines dual PA6T cores with high performance communication to two DDR2 SDRAM channels and a variety of network interfaces.