Electrical/Electronics...

Keyboard with USB interface. The 3000 Series keyboard is equipped with a Universal Serial Bus interface, which will help resolve interface and cabling problems. With USB, a single connector in the PC can support up to 127 connected peripherals. The Microsoft-compatible, standard 104-key keyboard is available in either a powered-hub (for daisy-chaining additional devices) or hubless version. Cherry Electrical Products, 11200 88th Ave, Pleasant Prairie, WI 53158. 800-510-1689. Circle 472.

Switch mode power supply. The model MP-300 integrates both power factor correction and EMI filtering functions on a single motherboard. It is available with one to five outputs from 2V to 130V. It functions as a 200W power supply without cooling or a 300W unit with optional fan. The design features a standard snap-in output connector for the auxiliary cooling fan. Both AC input and DC output are on the front of the unit, leaving the rear unobstructed. SSI, 1590 Sinclair St, Anaheim, CA 92806-5933. 714-712-4500. Circle 473.

Full-size LED monitors. All five models in the DMS-40PC-4/20S Series of 4 1/2 digit process monitors offer full-size (0.52 in.) LED displays, in choice of red, green, high-intensity red or low-power red colors. Input power can be from either standard +5V supplies or industrial 12V, 24V or 28V sources. The unit's span and zero-adjust potentiometers work independently from each other. A current-loop input ground eliminates display errors. Datel Inc, 11 Cabot Blvd, Mansfield, MA 02048-1151. 508-339-3000. Circle 476.

Ultracapacitor module. The PCM150056 is a 56VDC ultracapacitor module that incorporates a series of 28 ultracapacitor cells for 150 kilo-Joules of energy storage, with the ability to deliver 12.5 kW for more than five seconds in high-power environments. Each 95-farad, 25-milliohm module is designed to operate at up to 60V, and features integrated control electronics. Multiple modules can be placed in series for higher voltages. Maxwell Technologies, 4949 Greencraig Ln, San Diego, CA 92123. 619-496-4123. Circle 477.

Current transformers. The CR8300 series of electrical current transformers are specifically designed for electronic metering and sub-metering applications. Available in both wire lead and PC board styles, the transformers feature a high-grade laminated nickel alloy core material for very low ratio error and phase angle error. The PC board styles have a non-symmetrical mounting hole pattern to ensure correct orientation. CR Magnetics Inc, 544 Axminister Dr, Fenton, MO 63026. 314-343-8518. Circle 478.

EMI gasket materials. These electrically conductive elastomers are developed for EMI shielding gaskets. Cho-Form 3.0 material is a silver-plated, copper-filled silicone with a cure temperature of 85°C. Cho-Form 4.0 is nickel-graphite filled silicone formulated material to reduce galvanic activity between a housing and its EMI gasket. Cho-Form 5.0 is a Ag/Cu-filled silicone that cures at room temperature. Chomerics, Division of Parker Hannifin, 77 Dragon Ct, Woburn, MA 01888-4104. 781-939-4247. Circle 479.

Side-actuated SMT DIP switch. Series 193 now has 9, 10, and 12 position, side-actuated DIP switch styles, in addition to the 2 through 8 position types. All models are compatible with most SMT assembly placement equipment and meet or exceed IR or Vapor-Phase specifications up to 260°C for 6 seconds. Enclosed actuators for contact shielding and self-cleaning, gold plated make/break contacts are two key mechanical features. CTS Co, 1601 Mishawaka St, Elkhart, IN 46514-1812. 219-296-6700. Circle 474.

Electronic limit switches. These switches position jacks and actuators to increments of 0.001-in. while displaying both travel speed and position. The models provide 2, 4 or 6 programmable stops, and feature an LCD line text or 2-color display, pilot lights and standard RS-485 interface (RS 232 optional). The package includes a choice of enclosures, an encoder and mounting kit, and a cable and relay output for each limit point. Joyce Dayton Co, PO Box 1630, Dayton, OH 45401. 937-294-6261. Circle 475.

DC/DC converters. The AA series of non-encapsulated units have a 48V 2:1 input range (36V to 75V), industry standard sizes and pinouts, and BELLCORE MTBF greater than 1.7 million hours. These single-output converters are available in 25, 30 and 40W models with a choice of 3.3, 5 and 12V output. They also feature remote sensing to automatically adjust for voltage losses. Astec, 6339 Paseo del Lago, Carlsbad, CA 92009. 760-930-4600. Circle 667.

Power transformer. The Hipot rating for the SPW-3050 series is 4500VRMS from primaries to secondaries. The bobbin and shroud material is UL 94VO which meets strict creepage and clearance minimum. Every unit is 100% tested for induced voltage (shorted turns), exciting current, open circuit voltage (turns ratio), polarity (phasing), and dielectric strength. Prem Magnetics, 3521 N. Chapel Hill Rd, McHenry, IL 60050. 815-385-2700. Circle 653.