The second generation of distributed-mode actuators, the electromechanical components in flat speakers for portable devices, are now 20% smaller and up to 10 times more efficient than traditional magnet-and-coil designs.
The new DMAs from NXT plc, Huntingdon, U.K. (www.nxtsound.com/general/home.php), measure 22 7 3.5 mm and rely on piezoelectric polycrystalline ceramics. Applying a voltage changes the ceramic actuator, which generates sound when the actuator is connected to an acoustic lens. In a portable phone, for example, the DMA, which contains two ceramic actuators, attaches to the display screen, which vibrates to create sound. DMAs are typically 1.5-mm thick, weigh about 2 gm, and cost less than $2.00.
Discover how to meet growing customer demands for custom products without overextending your engineering team. Learn how scaling your automation strategy can help you win more...
Join industry leaders to explore how cutting edge digital technologies are transforming factories. Learn how to boost throughput, enhance flexibility, and accelerate your digital...
Explore the future of manufacturing. Learn how to leverage the latest digital technologies and strategies to build a more efficient, agile, and resilient digital factory.
