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DC-AC Inverter Offers Alarm Signal Output

Mon, 03/30/2009 - 12:25pm

dcac inverterTaiyo Yuden's LS6Q-1612A-RH — low-profile DC-to-AC inverter is intended for driving cold-cathode fluorescent lamps (CCFL) in Liquid Crystal Display (LCD) back-lighting applications. Designed specifically for use with 12-17” industrial-grade LCD panels, the LS6Q-1612A-RH provides dual LCD panel capability. It features brightness / backlight on-off control and a 5V (typ.) alarm output (if the inverter detects a CCFL open condition of the LCD display systems). This device is widely used in medical electronics, machine tools, digital signage, point-of-sale / kiosks, touch-screen and test & measurement equipment applications. The RoHS-compliant LS6Q-1612A-RH LCD backlight driver provides an input of 12 VDC and an output current of 3.3-6 mA rms per lamp. The device’s CCFL driving circuit includes a self-oscillating DC-to-AC converter, known as a Royer circuit, which minimizes EMI compared to other control methods. Total device power output is 4 W per lamp, or 16 W total. Physically, the LS6Q-1612A-RH measures 5.91” (150 mm) L x 1.97” (50 mm) W x 0.39” (10 mm) H. Other specifications include 1500 V rms start-up voltage, 2 A maximum input current and wide operating and storage temperature ranges of -20 to +70C and -30 to +85C, respectively.

Taiyo Yuden
(847) 925-0888, www.t-yuden.com

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