为什么调节屏幕亮度时会有噪音？联想昭阳S660(L7200-V)_笔记本常见问题_技术支持

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为什么调节屏幕亮度时会有噪音？: 发布时间：2007-12-13 11:30:31

答案：: 由于调节屏幕亮度必将通过改变通过屏幕线圈的电流大小来实现。因此，线圈通电电流的改变最终导致线圈发出声音是很正常的物理现象，只是由于人耳的敏感程度不同和厂商所使用的线圈品质和屏蔽工艺不同，使这种声音最终的表现结果也不同而已。; 我有联想昭阳S660(的问题要问

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