Electrical/Electronics 28900

Switch

F Series temperature switches have watertight, anodized-aluminum bodies; hermetically sealed, snap-acting switch elements; and a stainless steel vapor-pressure thermal system. Popular capillary and bulb lengths are available. The devices are field-adjustable, directly interchangeable with many similar older-style models, and UL-listed for use in Class 1, Division 1 Groups A, B, C, and D and Class II Groups E, F, and G hazardous locations.

Dresser Instrument, 250 E Main St., Stratford, CT 06614-5145; www.dresserinstruments.com .

Terminals

Two pc-board-mount screw terminals are manufactured in tin-plated 0.032 brass. The first is a low-profile, 15A device that offers a stable, no-rock design. The second is a heavy-duty, 30A screw terminal with six snap-in legs for stability and a serrated top surface to help secure connections. Both are available with a combination-drive 6-32 x 1/4 nickel-plated binding-head machine screw.

Keystone Electronics Corp., 31-07 20th Rd., Astoria, NY 11105-2017; FAX (718) 956-9040; www.keyelco.com .

Socket block

T-shaped twin connections let the BLDZ 3.5 socket block provide separate connections for two conductors at a single contact point. The screw-clamp device mates with SL 3.5 standard headers, accepts 28 to 14 AWG wire, and has a UL rating of 300V, 10A.

Weidmuller Inc., 821 Southlake Blvd., Richmond, VA 23236; FAX (804) 794-0252; www.weidmuller.com .

Chip adapter

SSOP-to-SOWIC Correct-A-Chip(R)adapters let new SSOP devices attach to boards designed for SOWIC packages without requiring board rework or redesign. Users can hand or reflow solder the 0.65-mm-pitch SSOP package to the top of the 20-pin adapter. The resulting subassembly can then be pick-and-placed and reflow soldered to the pc board.

Aries Electronics, Box 130, Frenchtown, NJ 08825; FAX (908) 996-3891; www.arieselec.com .

Vibration switch

The Model 330 switch monitors vibration in low- to medium-speed rotating machinery, such as heat exchanger fans and reciprocating compressors. An inertia-sensitive mechanism activates a snap-action switch with SPTDT output contacts if vibration exceeds an adjustable setpoint. SPDT contacts enable the switch to activate an alarm or initiate equipment shutdown.

PMC/BETA, 9 Tech Circle, Natick, MA 01760; FAX (508) 561-9762; www.pmcbeta.com .

CPU

A 850-MHz Pentium III processor powers the CP603 6U Compact PCI CPU. The board's 64-bit Compact PCI interface permits data-transfer rates as fast as 264 Mbytes/sec. Features include: up to 768 Mbytes SDRAM, high-definition AGP/VGA graphics controller with 4 Mbytes video RAM, two Fast Ethernet interfaces, one Ultrawide SCSI interface, rear I/O, hot-swap support, and low power consumption. Versions are available for both standard and extended operating ranges.

PEP Modular Computers Inc., 750 Holiday Dr. Building 9, Pittsburgh, PA 15220-2783; FAX (412) 921-3356; www.pep.com .

Connector gaskets

Designed to fit over IEEE 1394 right-angle, upright connectors, a line of EMI gaskets provides a low-impedance path from the connector shell to the faceplate. The beryllium copper gaskets solder to the pc board to provide grounding and reduce emissions, and are available in a variety of plating finishes.

Instrument Specialties, Box 650, Delaware Water Gap, PA 18327-0136; FAX (570) 424-6213; www.instr.com .

Fuse

The blades of the CUBEFuse(TM)industrial power fuse have an extended insulating sleeve to prevent human contact with any energized component of the part during normal operation. Fuseholders snap onto a 35-mm DIN rail or mount directly to a panel's backplane. Wire terminals are rated for dual wire termination, and a 30A fuse may be inserted into the 60A fuseholder, eliminating the need for fuse reducers. The fuse, fuse base, and wire ports are all IP-20 "finger safe" and provide Class J electrical performance.

Cooper Bussman, Box 14460, St. Louis, MO 63178-4460; www.bussman.com .

Transducer

Fused silicon strain-gage technology lets PX705 Series transducers resist shock, vibration, and pressure pulsations. The pressure-sensing element and the process connection are one-piece construction, resulting in a small, rugged device.

OMEGA Engineering, Box 4047, Stamford, CT 06907-4047; FAX (203) 359-7700; www.omega.com .

Precision balls

Available in precision grades up to Grade 10, this family of 99.99% alumina oxide ruby/sapphire balls suit such optical and light-refractive applications as lasers. The chemically inert balls feature high surface smoothness, are comparable in hardness to alumina ceramic, and are available in different colors.

Thomson Precision Ball Co., 37 Mill St., Unionville, CT 06085

Power supply

Occupying one cubic inch and weighing 1.5 oz, CA Series precision high-voltage supplies can mount directly on a pc board. An encapsulated steel case protects the supplies from the environment and provides EMI/RFI shielding. The series accepts 11.5 to 15.5V dc inputs (24V dc optional); 10 models provide 0 to 250 through 0 to 2,000V dc positive or negative outputs. Ripple is 2 ppm peak to peak, stability is 0.001% per hour, and the temperature coefficient is 25 ppm per degree C.

EMCO High Voltage Corp., 11126 Ridge Rd., Sutter Creek, CA 95685; FAX (209) 223-2779; www.emcohighvoltage.com .

UPS

The Sitop power DC-UPS 15A uninterruptible power supply is said to reliably power 15A to 24V devices in the event of supply system problems. Rechargeable battery modules are available in 2.5, 3.2, 7, and 12 A-hr for temperatures from -40 to 60C. The unit has extensive monitoring functions, and outputs messages via LEDs, floating contacts, and an optional RS-232 interface.

Siemens AG; FAX (203) 359-7700; www.ad.siemens.de .

RF transformers

CX2039, -2040, and -2047 surface-mount RF transformers use 0.15 x 0.15 inch of pc-board space. The devices operate from 500 kHz to 1.5 GHz, and are available with 1:1 and 1:4 impedance ratios. Centertaps are optional, and both dc-isolating and non-dc-isolating versions are available. Applications include cable modems, set-top boxes, and wireless and cable network infrastructure equipment.

Pulse, 12220 World Trade Dr., San Diego, CA 92128; FAX (858) 674-8262; www.pulseeng.com .

Switch

Proprietary circuitry lets Furtif series non-contact coded safety switches operate without a relay module to obtain safety control category 2 or with a relay to obtain safety control category 4. The CE-approved device comes in polycarbonate or stainless-steel IP 67 housings. The series offers 10 tamper-proof codes, 4 sensing distances, auxiliary outputs, and a dual-color LED.

Norstat Inc., 300 Roundhill Dr. Unit 4, Rockaway, NJ 07866; FAX (973) 586-1590; www.norstat.com .

Fan

A microchip gives users programmable control of the 5910PL fan and provides communications functions. Programmable fan functions include speed control, low-speed and locked-rotor alarm, and inrush current limit. The fan has an optional tach output, delivers up to 290 cfm, and measures 173 x 150 x 25 mm.

NMB Technologies, 9730 Independence Ave., Chatsworth, CA 91311; FAX (818) 709-0387; www.nmbtech.com .

Stop switch

The Rafi Rafix FS Emergency Stop Switch is reportedly the first stop switch engineered specifically for installation directly to the printed circuit board. It provides a mounting depth of 9.7 mm and can be accommodated on the sample printed circuit board as other PCB mounted elements. The mounting hole diameter is 22.3 mm, according to IEC 947. Operating temperature is -25 to 70C.

C & K Components, 57 Stanley Ave., Watertown, MA 02172; FAX (617) 926-6846; www.ckcorp.com .

EMI filters

A new series of 2-56 bolt style high-frequency coaxial EMI filters is now available in C-, L-, Pi-, and T-sections, offering suppression from 10 MHz through 10 GHz. The series is offered with either a working voltage of 50V dc and a minimum capacitance of 10,000pF; a working voltage of 100V dc and a minimum capacitance of 5000pF, and a working voltage of 200V dc with both 2500pF and 1000pF minimum capacitances. Applications include radar, communications equipment, and satellite transmissions.

Maxwell Technologies; FAX (775) 887-5757; www.maxwellsierra.com .