In, out, and about HMI: Touch panel computers, LED drivers

03/15/2007


HMI/controllers
Fanless touch panel computers from the eAutomation Group of Advantech now feature RoHS compliance.

New products in the HMI marketplace include fanless, compact, touch panel computers from the eAutomation Group of Advantech and a family of LED drivers from Endicott Research Group (ERG) for high-bright LEDs used in LCD backlighting applications.

TPC-66S 5.7-in. QVGA STN LCD and TPC-66T 5.6-in. QVGA TFT LCD fanless touch panel computers now add RoHS compliance to their features, which include an industrial-grade, ultra-slim design with the same light form factor as previous TPCs. Computers have an XScale PXA270 416 MHz processor to minimize power consumption without sacrificing performance. They also feature a 10/100 Base-T Ethernet port, two RS-232 ports, one RS-232/485 port, an easy-to-access CompactFlash slot, and Microsoft Windows CE 5.0 bundled on 64 MB of internal flash memory. Advantech says these CE OS platforms offer a flexible, open HMI environment for system integration solutions such as thin-client applications. The platforms are designed for use in harsh NEMA 4/IP65 environments.

Control components
Smart Force family of LED drivers from Endicott Research Group provide a flexible, open HMI environment for high-bright LEDs used in LCD backlighting applications.

Smart Force family LED drivers for high-bright LEDs used in LCD backlighting applications come as an LED driver board or a complete kit including driver board and LED rails. ERG calls the line a compact, reliable, electrically efficient, and low-cost technology for driving high-bright LEDs to backlight LCDs from 6.4 to 20-in. diagonal and larger. Driver boards use a dc-dc boost to provide voltage to a constant current driver and LED rail. Boards with input voltages from 5 to 48-V can be designed. Small size of the driver boards and thermal management used to dissipate heat from the LED junction make the product unique, says ERG. The products are offered standard with input voltages of 12-, 24-, or 48-V in single-, dual-, or 3-channel versions. The 48-V input voltage board measures 34 x 50 mm. Custom designs are available.

—Edited by Jeanine Katzel , senior editor, Control Engineering





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