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TGM80-75-12L Datasheet(PDF) 4 Page - NEC |
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TGM80-75-12L Datasheet(HTML) 4 Page - NEC |
4 / 31 page 2010.03.19 9307PIEVOL04E ●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data. ●Please request for a specification sheet for detailed product data prior to the purchase. ●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog. 4 Piezoelectric Ceramics Vol.04 Evaluatio NEC TO transducer m 1) Resonan When an frequency f i natural frequ violently. T frequency fr A constan was used for resonance fr can be measu such as the H Resonanc equivalent ci anti-resonan following eq Fig fr = { 12 / π fa = { 12 / π A piezoelectric material responds mechanically when voltage is applied, and conversely, generates a voltage in response to a mechanical change. To create piezoelectric ceramics, polycrystalline ceramics are fired and baked at a high temperature. Then electrodes are mounted and a DC field applied in order to polarize the ceramic material; once polarized, the material exhibits piezoelectric properties, allowing it to be used as a piezoelectric ceramic transducer. These transducers are also called electrostriction transducers, since ceramic crystals are deformed by electricity. Barium titanate and lead zircotitanate are the most popular piezoelectric ceramics. In addition, NEC TOKIN also uses a variety of other materials, including conventional lead zircotitanate. This results in piezoelectric materials that can be used in a wide variety of applications: those that use the piezoelectric effect (such as igniters and pickups), those that utilize resonance (e.g., filters), and those that utilize the electrostrictive effect (such as piezoelectric buzzers and displacement elements). In addition to barium titanate and lead zircotitanate, popular as piezoelectric ceramics, NEC TOKIN offers multi- component solid ceramics developed from conventional lead zircotitanate ceramics. They meet a wide range of specifications for a wide range of applications. The main applications include: those that use the piezoelectric effect (such as sensors and pickups), those that utilize resonance (such as transducers for ultrasonic motors and cleaning equipments), and those that utilize the electrostrictive effect (such as piezoelectric sound elements and displacement elements). In addition, they can be used as ultrasonic vibrators and transducers. Design Materials Outline |
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