High-efficiency power supplies

These single- and multiple-output power supplies are designed for computers and office automation equipment. The available outputs range from 3.3 V at 10 A to 48 V at 1.8 A. The compact power supplies accept universal power input from 90 to 265 V, 47 to 63 Hz, single-phase AC and 120 to 370 VDC. They also comply with international safety requirements and Class B EMI standards, including the CE low-voltage directive. Todd Products Corp. Reader Service Card No. 170

Air filters These Quadrafoam and Polyester air filters have attained "CE" compliance for use in Europe. To satisfy requirements, they have been recognized as UL 94 HF-1. When used as part of fire enclosure construction, they can also be configured with metal bottom screens having a mesh that meets the minimum dimensional requirements described in the standard. Universal Air Filter Co. Reader Service Card No. 171

Power conditioner The Topaz MP1 Power Conditioner (7.5 to 15 kVA) offers microprocessor-controlled tap changer technology and delivers 95% efficiency. It consists of a tapped ultra-isolator noise suppression transformer with solid-state switching, and it provides 140 dB common mode and 60 dB normal mode noise attenuation. The MP1 features a standard tight output voltage regulation of plus/minus 5% typical with input voltage range at 15%, -25%, and it is able to sustain multiple input and output voltages. MGE UPS Systems Inc. Reader Service Card No. 172

High-ripple current capacitors The Type GW high-performance electrolytic capacitors can operate at ripple currents ranging up to 100 and can be used with standard, switchmode and uninterruptible power supplies, frequency converters and welding equipment. The capacitors incorporate exclusive internal windings to ensure efficient removal of generated heat. Construction features include aluminum cans with novel mounting clamps, M-6 screw terminals and welded contacts. The capacitors are available in 90 by 69 mm or 100 by 98 mm. Custom sizes and special voltage/capacitance combinations are also available on request. Selling prices average from $23.60. Seacor Inc. Reader Service Card No. 173

VSAT power amplifiers These VSAT power amplifiers are designed for mobile applications, including credit card verification and downloading information to a mobile source. They offer three amplifiers in each C- and Ku-band, with saturated output power from 2 to 3 W in C-band and 0.5 to 2 W in Ku-band. The C-band amplifiers cover 5.9 to 7.1 GHz. The Ku-band amplifiers cover 14 to 14.5 GHz. M/A-COM Reader Service Card No. 174

Digital-to-analog converter The H15760 10-bit digital-to-analog converter provides wide spurious free dynamic range and low harmonic distortion. It consumes only 165 mW at 5 V and has a power down mode, at which it consumes only 9.3 mW at 3 V. The H15760 is available for $8.80 in quantities of 100. Harris Semiconductor Reader Service Card No. 175

Slim external power supplies The SSL40 Series is a 40 W universal input AC/DC external Class 2 power supply for desktop and mobile applications, such as network adaptors, DSL modems, cable modems, flat panel displays and external storage devices. It weighs only 7.06 oz. and is housed in a slim plastic enclosure. It provides six single-output models from 12 to 48 V. All six output models offer total line and load regulation to within plus/minus 0.2%. Overvoltage and short circuit protection are standard features. A variety of output connector options are available. Artesyn Reader Service Card No. 176

WLL RF power subsystem The SC5000W platform is designed for wideband CDMA wireless networks operating from 2.37 to 2.4 GHz and is targeted at wireless local loop and fixed wireless access applications. The system features hot standby, RF power switching, and forward and reverse power sampling ports. Spectrian Corp. Reader Service Card No. 177

Fifteen-slot chassis Model 7490 Series of 15-slot, medium-capacity, rackmount chassis allows users to customize a standard off-the-shelf system to their own requirements. Users can select various base models, back planes and power supply options. System features include Pentium II back planes, power supplies and front panel controls. The 40 lb. chassis is made of 18-gauge cold rolled steel and provides multiple rear-panel knockouts for easy installation of auxiliary drive bays, power supplies or other external devices. Other features include a lockable front access to system controls and two hot-swap filtered cooling fans. Prices range from $1319 to $2299. Industrial Computer Source Reader Service Card No. 178Electronic cabinets The Heavy Duty line of cabinets is made of steel or stainless steel. For shock and vibration, Heavy Duty cabinets qualify under Mil-Std 810D, section 513.4, and Mil-Std 901. For earthquake resistance, reinforcing can be added to meet testing through Zone 4. Standard cabinets can hold more than 3000 lbs. of equipment and are available in four depths, three panel widths and 37 panel heights to 84 in. Thousands of options and assembly alternatives are available along with custom modifications and colors. Equipto Electronics Corp. Reader Service Card No. 179Cable preparation tools The Easiax Plus automated cable preparation tools are for 7/8-in., 1/4-in. and 1 5/8-in. Heliax cable. The tools attach to an electric drill and cut the cable jacket, outer conductor and foam core to provide cable connections in 10 seconds or less. The aluminum tools are light-weight and corrosion-resistant. Andrew Corp. Reader Service Card No. 180

Three-phase UPS The on-line three-phase Comet uninterruptible power supply consists of a solid-state inverter, rectifier/battery charger, continuous-duty static switch, and internal maintenance bypass switch and battery plant. The pulse-width modulated inverter uses insulated gate bipolar transistors with Digital Power Quality logic microcircuitry. It is rated for 100% step loads and supports all standard input voltages. MGE UPS Systems Reader Service Card No. 181

Power meters The EPM Series of single- and dual-channel power meters feature an internal, rechargeable-battery option; serial interfaces; and zero/calibration lockout. The power meters are now available with RS-232 and RS-422 serial interfaces to provide improved connectivity to a PC for data storage and manipulation. The zero/calibration feature prevents the power meter from taking measurements before the connected sensor has been zeroed and calibrated. The meters also have a TTL I/O port that alerts users when a measurement has exceeded a predetermined limit. Hewlett-Packard Co. Reader Service Card No. 182

Computer power supplies The TPC closed frame power supply provides 150 to 250 W with plus/minus 5 V, plus/minus 12 V and 3.3 V outputs for computer and server applications. The TPC power solution offers 115/220 VAC switch-selectable input voltages from 47 to 63 Hz. Other features include low ripple and noise, and compliance with international safety and Class B EMI standards, including the CE low-voltage directive. It also features four outputs with 3.3 V and 5 V standby. Models are available with 150 W, 200 W or 250 W ratings. Custom cabling harnesses and a remote on/off option are also available. Todd Products Corp. Reader Service Card No. 183Modular power system The Vortex power system can be installed with as little as 200 A and then incrementally upgraded to provide as much as 10,000 A of network power. It features a meter-control alarm that monitors and controls up to 56 power conversion units simultaneously. Operating parameters for all PCUs are set concurrently. The system allows hot-swapping of modular units and offers easy front access to key components. Reltec Corp. Reader Service Card No. 184On-line UPS The Best 610 is an on-line, high-frequency, double-conversion uninterruptible power system. It features an input power factor correction circuit, smooth sine wave power protection, external battery connector and PC interface via the Internet. It also offers a built-in BestDock communications slot for expanded options and free network-ready CheckUPS software with shut-down capabilities. The UPS is available in 700 VA, 1 kVA, 1.5 kVA, 2 kVA, 3 kVA, 6 kVA and 10 kVA sizes. Best Power Reader Service Card No. 18