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高频变压器EE或EI型磁芯之间的吸引力使磁芯移位?</h3>
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<p> <strong>高频变压?/strong>EE或EI型磁芯之间的吸引力，能使两个磁芯发生位移；绕组电流相互间的引力或斥力，也能使线圈产生偏移。此外，受机械振动时能导致周期性的形变。上述因素均会使高频变压器在工作时发出音频噪声?0W以下单片开关电源的音频噪声频率，约?0kHz?0kHz?/p>
<p> 为防止磁芯之间产生相对位移，通常以环氧树脂作胶合剂，将两个磁芯的3个接触面（含中心柱）进行粘接。但这种刚性连接方式的效果并不理想。因为这无法将音频噪声减至最低，况且胶合剂过多，磁芯在受机械应力时还容易折断?/p>
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