The fast, yet soft reverse recovery time characteristics of HEXFET®high-voltage power MOSFETs help them reduce EMI emissions in zero-voltage switching (ZVS) power supplies. ZVS topologies offer increased power density because their faster switching frequencies reduces the size of magnetic components. The MOSFETs reduce power-supply noise and enable switching speeds as fast as 250 kHz.
International Rectifier, 233 Kansas St., El Segundo, CA 90245; FAX (310) 252-7100; www.irf.com.
Capable of switching a maximum 80A inrush current, the FBR51NDxx-WL subminiature automotive relay suits long-life-expectancy lamp load and motor applications. Specs include: a 14V dc/115W rating for 200,000 operations, maximum carrying current of 35A/hour at 20C, 10-msec max operating time, 5-msec max release time, and 100-mV contact voltage drop at 12V dc-2A. The SPST-NO relay is available with 6, 9, 10, or 12V dc coils.
Fujitsu Takamisawa America Inc., 250 E Caribbean Dr., Sunnyvale, CA 94089; FAX (408) 745-4971; www.fujitsu.takamisawa.com.
Suitable for liquids that don't crystalize or leave a solid residue, the ELS-1200CR electro-optic level switch monitors liquids within vessels pressurized to 2,500 psi. Integrated electronics eliminate the need for a separate controller, and the solid-state design extends service life by eliminating moving parts.
Gems Sensors, 1 Cowles Rd., Plainville, CT 06062-1198; FAX (860) 747-4244; www.gemssensors.com.
Advanced offset voltage trimming techniques let the MCP6XX family of 2.5V micropower op amps achieve offset voltages less than 250µV. Required supply current over the 2.5 to 5.5V range is 25µA, and bias current is 1 pA. Single, single with chip select, dual, and quad configurations are available.
Arizona Microchip Technology Ltd., Microchip House 505 Eskdale Rd., Winnersh Triangle, Wokingham, Berks UK RG41 - 5TU; FAX (860) 747-4244; www.microchip.com.
The LS6511 low-current, mixed-signal IC features a two-stage differential amplifier to directly interface with PIR sensor outputs. A window comparator and digital filter process amplifier outputs to eliminate noise and validate motion. An external RC network controls gain and bandwidth, and two outputs can directly drive a relay coil and LED.
LSI Computer Systems, 1235 Walt Whitman Rd., Melville, NY 11747-3086; FAX (631) 271-0405; www.lsicsi.com.