AC stands for alternating current, which refers to the fact that AC power periodically changes direction.
In modified sine wave inverters, the polarity abruptly switches from positive to negative.
The other main thing to be concerned about with modified sine wave inverters is delicate medical equipment.
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Other types of medical equipment, such as oxygen concentrators, also need a pure sine wave.
Some devices suffer from unwanted interference from a modified sine wave inverter.
If that seems complicated, it may be easier to think of it in terms of your cell phone.
You plug directly into your car’scigarette lighter socket, which is both easier and more efficient.
