Do not placed on high power speaker box.

不要放在大功率音箱箱体之上。

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This would be enough to power an electronic speaker or small LED (light-emitting diode) lights, but not enough to operate a laptop, which requires an estimated 30 to 50 watts.

这对于电子扬声器或小型LED灯已经足够，但还不足以支持笔记本运行。笔记本一般需要30到50瓦的功率。

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For example, the electrical characteristics of the power cable are significantly different from those of the speaker cable.

比如，供电电缆的电气特征和扬声器电缆明显不同。

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Diodes are essential in radios to turn rapidly oscillating radio waves into a smoother direct-current signal that can power a speaker.

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