Bidirectional current-voltage converters based on magnetostrictive/ piezoelectric composites
Bidirectional current-voltage converters based on magnetostrictive/ piezoelectric composites
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DOI：
10.1063/1.3160739
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发表时间：
2009-06
影响因子：
4
通讯作者：
Yanmin Jia;S. Or;H. Chan;J. Jiao;Haosu Luo;S. Zwaag
中科院分区：
文献类型：
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作者：
Yanmin Jia;S. Or;H. Chan;J. Jiao;Haosu Luo;S. Zwaag
本文报道了一种基于磁致伸缩合金和压电晶体复合材料线圈绕制的无电源双向电流-电压转换器。施加到线圈的电流感应出磁场，由于直接磁电效应，导致来自复合材料的电压。相反，施加到复合材料上的电压由于匡威磁电效应而产生磁感应，从而导致来自线圈的电流。该转换器具有良好的电流和电压之间的线性关系。与传统的由运算放大器构成的电流/电压转换器相比，该器件具有低成本、无功耗、双向转换等优点。
We report a power supply-free, bidirectional electric current-voltage converter based on a coil-wound laminated composite of magnetostrictive alloy and piezoelectric crystal. An electric current applied to the coil induces a magnetic field, resulting in an electric voltage from the composite due to the direct magnetoelectric effect. Conversely, an electric voltage applied to the composite produces a magnetic induction due to the converse magnetoelectric effect, leading to an electric current from the coil. The converter exhibits excellent linear relationships between current and voltage. Compared with traditional current/voltage converters made by operational amplifiers, the advantages of the proposed device include low cost, no power consumption, and bidirectional conversion.