A modified sine wave inverter is a dirty inverter with minimal filtering and a cheap way to get the voltage up from 12 to 115/ 120 volts. If you want something good that will protect your electronics, get a pure sine wave inverter, it is well as pure as the power line frequency can be sometimes better.

Likewise, will modified sine wave damage electronics? If your electronics don’t fall into either of those categories, then it’s extremely unlikely that a modified sine wave inverter will do any damage. So while a pure sine wave inverter is safe for use with a wider range of devices, the greater cost associated with pure sine wave inverters isn’t always worth it.

Keeping this in view, what is the difference between a pure sine wave and a modified sine wave? Both types of power inverter will provide power to AC appliances, however pure sine is high quality equal to (or better than) the power in your home, modified sine wave power is an simpler form of power and is adequate for simple electronics, but may damage more complex ones.

**Do you really need a pure sine wave inverter?**

When a pure sine wave inverter isn’t necessary if you have electronic devices that use rectifiers to convert AC to DC, then you probably don’t need a pure sine wave inverter. However, most electronic devices run just fine on a modified sine wave.

**How do you turn a square wave into a sine wave?**

The simplest method of converting a square wave to a sine wave is by filtering. Basically, a square wave consists of a fundamental frequency with a lot of higher harmonics. If the harmonics can be removed, then a sine wave of the fundamental frequency remains.

**Can run a microwave on a modified sine wave inverter?**

Typically, a microwave can be powered by both pure sine wave and modified sine wave inverters. Since a pure sine wave inverter’s output is equivalent to utility power, you can expect a microwave to perform normally. Modified sine wave power on the other hand, can cause a range of performance issues.

**Is square wave inverter harmful?**

**Safety:** A Square wave inverter is less safe for the appliances, whereas a sine wave inverters are highly safe.

**Cost:** A square wave inverter is less expensive than a sine wave inverter.

**Noise: **As mentioned earlier, a square wave inverter is noisy but a sine wave inverter exhibits normal sound only.

**What is a sine wave converter?**

Conventional AC power is produced by rotating machines (alternators) that produce a smooth alternation, like that of a pendulum. It is described mathematically as a “sine wave”. It is the ideal waveform for the transfer of AC power. An inverter is an electronic device that converts DC to AC through a switching process.

**What appliances need pure sine wave?**

Some devices and appliances that require a pure sine inverter are:

- Microwaves
- Laser printers
- Variable speed tools
- Cordless tool battery chargers
- Key machines
- CPAP machines with humidifiers
- Medical equipment