在了解汽车逆变器之前，了解交流和直流电源之间的区别非常重要。从基本的角度来说，交流电源就是从家里的电源插座中取出来的，直流电源就是你从电池中获得的电源。
由于汽车电池提供直流电压，但是大多数消费类电子产品都使用交流电，因此如果您想在路上使用交流设备，则需要一种称为汽车电源逆变器的设备。安装了汽车电源逆变器后，您可以将任何电子设备，将其插入汽车，并正常使用，但需要注意几点。
在汽车中使用变频器时要记住的一些最重要的限制因素包括汽车电池的容量，交流发电机的额定输出和逆变器的输出功率。
逆变器如何工作？
逆变器通过使用单向DC电源来模拟交流（AC）电源而起作用。电子逆变器本质上是振荡器，其快速切换DC电源的极性，这有效地产生方波。
由于大多数消费电子产品需要更接近真正正弦波的功能，因此大多数逆变器都包含可产生修正或纯正弦波的附加元件。
什么时候需要汽车逆变器？
大量时间在路上的人都需要逆变器。这些装置特别适用于长途旅行，露营，商务旅行的人，越野卡车司机以及其他类似的应用。
某些设备（如手机和笔记本电脑）可与12v附件一起使用，可直接插入点烟器或配件插孔。但是，任何需要AC输入的电子设备都需要逆变器。您可以使用汽车逆变器运行的一些设备包括：
电视
DVD和蓝光播放器
加热器
烹饪设备
电动工具
汽车逆变器又那些类型？
有许多不同类型的逆变器主要有
修正的正弦波
这些逆变器是两者中更实惠的。它们产生的“修正正弦波”对大多数消费电子产品来说都非常好，所以它们在很多不同的应用中都能很好地工作。
纯正弦波
这些往往更贵，但它们产生的正弦波更接近家中电源插座的交流电源。有些设备，如不间断电源，如果没有稳定的纯正弦波，可能无法正常工作，但大多数消费电子产品在没有电源的情况下都能正常工作。
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