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Hybrid Couplers Target Wireless Band Applications
February 13, 2009 6:48 am | Product Releases | CommentsMECA’s 705 Series 3-dB, 90° hybrid couplers cover wireless band applications from UHF through UMTS (0.400 GHz to 2.200 GHz) with power levels to 500 W. The components are suitable for use as a duplexer for DAS head end systems or combining amplifiers for antenna sharing applications with high isolation. The units are equipped with
SMT Connector Exhibits 19.05-mm Mated Height
February 13, 2009 6:12 am | Product Releases | CommentsDesigned for high-pin-count and high-density 1.27-mm pitch board-to-board applications, Advanced Interconnections’ B2B SMT connector has a mated height of 19.05 mm. The component offers 8- and 10-row configurations, from 240 to 500 positions, and a current rating of 3 A per pin. The unit employs screw-machined terminals with
Sixteenth-Brick Converter Challenges Eighth-Brick Devices
February 13, 2009 4:54 am | Product Releases | CommentsAimed at existing sixteenth-brick users who want to power higher-demand applications without redesigning boards for larger products (eighth-brick), the sixteenth-brick PKU-B DC/DC module from Ericsson can deliver an output of 5 V at 20 A. Using a line-regulated half-bridge configuration with the control circuit on the primary side, the 8.3-mm high EN60950-rated converter operates at up to 92% efficiency with a power density as high as 312 W/in2.
Interface IC Addresses Capacitive Sensors
February 13, 2009 4:39 am | Product Releases | CommentsExhibiting a noise level of 30 aF, e2v’s CPIC2.0 interface IC enables acceleration, pressure, altitude, humidity, rain, level, and gas measurements in MEMS transducers with a base capacitance from 1 pF to 32 pF. The component contains a dual capacitor input enabling several configurations, including "Delta"Csens/"Sigma"Csens. The device embeds a temperature sensor and an EEPROM for storage of calibration parameters, temperature, and
LED Assemblies Offer Custom Brightness Options
February 13, 2009 3:51 am | Product Releases | CommentsPresenting blue, red, and green standard colors, Elma Electronic’s new line of LED assemblies can be customized to include different levels of indicating brightness for each LED within the same unit to meet a specific indicating goal. Customized colors, such as orange, amber, and white, are also available. Most LED designs are
Where Do the LEDs Belong?
February 12, 2009 12:14 pm | by Alfred Poor, Contributing Editor | Articles | CommentsAt CES 2009 in Las Vegas this year, it appeared that every major LCD TV manufacturer had at least one model with an LED backlight. It quickly became apparent that there are some clear advantages to using LEDs as the light source, but a closer look at the way this solid state lighting is implemented raises some interesting questions. First, let’s cover the plus side.
Amplifiers Based on Gallium Arsenide Technology
February 12, 2009 9:35 am | Product Releases | CommentsBased on gallium arsenide (GaAs) integrated circuit (IC) technology, five broadband power amplifiers from Teseq are intended for EMC testing environments with non-ideal load conditions. Operating from 0.8 GHz to 3.1 GHz and 2 GHz to 6 GHz, the amplifiers feature power levels ranging from 30 W to 450 W. All units are powered from a switched mode power supply
Pushbutton Switch Has Multiple LED Color Options
February 12, 2009 9:19 am | Product Releases | CommentsThe LP1 series, an illuminated round pushbutton switch from E-Switch, features multiple LED color options of blue, green, red, white, and yellow. Features include: electrical life of 50,000 cycles; operating force of 250 +/- 100 gf; contact rating of 100 mA @ 30 VDC; contact resistance of 50 milliohms; insulation resistance of 100 Megaohms (Min. @ 500 VDC); and dielectric strength
6LoWPAN Goes Where ZigBee Can't
February 12, 2009 8:25 am | by Jon Titus, Senior Technical Editor | Articles | CommentsMany “standard” and proprietary protocols use the media-access controller (MAC) and the physical circuits (PHY) associated with IEEE 802.15.4 radios. Those protocols use their own arrangements of bits and bytes to transfer information between nodes, but none of them use the Internet Protocol (IP). So they cannot directly communicate with Internet-based devices and Web servers/browsers.
Module Enables PCIe Expansion
February 12, 2009 8:24 am | Product Releases | CommentsConsisting of a PCIe host card, cable, and chassis, Magma’s ExpressBox² (EB2) seamlessly expands the available PCIe slots of desktops, workstations, servers, and laptops. The unit supports communication bandwidth between host and
Take a Top-Down View of Industrial Imaging
February 12, 2009 8:23 am | by Jon Titus, Senior Technical Editor | Articles | CommentsBefore you think about using an industrial imaging system to solve an inspection problem, you must exactly define the problem or problems you need to solve. To start, John Keating, product marketing manager at Cognex breaks vision tasks into four categories: inspection that detects flaws, gauging that performs a dimensional measurement, identification that reads information, and guidance that directs movement.
Achieving High Efficiency with Power Switches
February 12, 2009 8:18 am | by Gwan-Bon Koo, Senior Engineer, Fairchild Semiconductor | Articles | CommentsIn general, high frequency operation allows the use of small-sized passive components in switch mode power supplies (SMPS), while it causes switching losses to increase in a hard switching mode. To reduce switching losses at high switching frequencies, many soft switching techniques have been developed. Among them, load resonant techniques and zero voltage transition techniques are widely used.
Data Logger Measures Temperature/Relative Humidity
February 12, 2009 7:46 am | Product Releases | CommentsPerforming over the 0%-to-100% RH and -35°C-to-80°C measurement ranges, Measurement Computing's USB-502-LCD standalone data logger measures and stores up to 16,379 relative humidity and 16,379 temperature readings. The LCD window shows measurements and logger status information, and a button enables
Diode Laser Delivers 500 W
February 12, 2009 7:13 am | Product Releases | CommentsAt 976 nm, DILAS’ new fiber-coupled, multi-bar diode laser provides up to 500 W output through a cladding-mode-free QBH 400-µm core diameter fiber with a numerical aperture of <0.2 and WPE of >35%. The device can be packaged in up to 12-bar configurations, and only requires industrial water for cooling. The module demonstrates
Current-Sense Resistors Exhibit Low Resistance
February 12, 2009 6:45 am | Product Releases | CommentsShowing resistance shifts of <0.5% and < 0.25% for short time overloads, Stackpole Electronics’ BR Series bare-metal current-sense resistors exhibit resistance values down to 1 mOhm. The RoHS-compliant devices offer typ. inductance of =1 nH, sizes of 1 W, 3 W, and 5 W, TCR from 100 ppm to 20 ppm, and tolerances of
