What Is A Pure Sine Wave Power Inverter? – Modified & Square Inverters

What is a pure sine wave inverter

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What is a pure sine wave inverter

To fully understand what is a pure sine wave power inverter is, you must understand what a power inverter is. This is because a pure sine wave inverter is just a type of power inverter.

In fact, it is one of the three major types of inverters that you can buy. Most of the pure sine wave inverters are single phase. But 3 phase pure sine wave inverters are also available in the market.

To fully understand how it functions and how it is different from other power inverters, you need to understand how a power inverter works

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What Is A Power Inverter?

A power inverter is a device that takes DC (Direct current) power and changes it into AC (alternating current) power. This process is necessary so that we can use generated energy from sources of DC power, as most of our world runs off of AC power. 

Explaining the process in the most simple of terms, a power inverter is like a three-step system. The source generates power, the inverter converts it, and then the thing that needs power receives it from the inverter. To put an example into real life, a windmill farm generates power, but the power it generates is DC energy. In order to harness the energy of the farm, inverters need to change it from DC to AC power. From that point, the power is accessible to most electronic devices. However, this is not just limited to windmill farms. Solar energy farms and generators usually also need a power inverter to convert the form of energy they create.

Power inverters are also not limited to such large-scale use. Inverters can power something as large as a hospital or as small as a home

What Do Make Pure Sine Inverters Unique?

Pure sine wave power inverters are the most efficient form of an inverter, and the most expensive. They are able to power the most sensitive electronics and are a more sophisticated technology.

They supply the proper amount of energy to electronics that could become damaged should they not receive the right amount. This includes something like a refrigerator or a microwave.

On a larger scale, it includes sensitive electronics that exist in places like hospitals. Should you need to power something as sensitive as a computer, a pure sine wave inverter is absolutely needed. 

How Are Pure Sine Inverters Different From Modified And Square Inverters?

Pure sine wave power inverters are different because they are more technologically sophisticated and advanced than the other two. While modified sine wave inverters are still commonly used and very affordable, they cannot power sensitive electronics.

They are best used to power more simplified ones, like phone-chargers, air conditioners, and heaters. Square power inverters can only provide energy to simple machinery. 

However, Sine inverters can power practically anything. They are able to produce the energy that AC-reliant equipment needs, without running the risk of damaging anything. 

This is why pure sine wave power inverters are often preferred in environments where electronics working without a flaw is essential, such as a hospital.

The backup generators are undoubtedly equipped with pure sine wave inverters to make sure that there are no issues in powering necessary equipment.

In that case, it can quite literally be the difference between life and death. Knowing which type of power inverter you buy for your particular needs is fundamentally essential.

How Do Pure Sine Wave Inverters Work?

Pure sine wave inverters do what any power inverter does. They constantly switch the current of power back and forth at a rapid pace so it is no longer in one direct and continuous line.

This is how alternating current earned its name. Because of the alternating way in which the current of electricity moves.

However, unlike square wave inverters and modified sine wave inverters, this power supplied by pure sine wave inverters is much smoother.

It is like a constant wiggling wave of energy, curving gently. With the other types of inverters, the energy current is very blocky and abrupt.

Because of this, pure sine wave inverters supply not only more energy but also continuous and uninterrupted energy.

Do You Need A Pure Sine Wave Power Inverter?

Consider the needs you have. What do you need a power inverter for? Do you need it to power your house during a blackout?

Do you live in an area with frequent storms and experience blackouts often? 

If so, then you would most likely want a pure sine wave inverter. This will keep your refrigerator and microwave running without damaging them.

It will supply power to your home while working in conjunction with your power generator. However, do you only need a power inverter to supply energy to simple electronics while doing something recreational like camping?

If this is the case, you most likely only need a modified sine wave inverter. As pure sine wave power inverters can be rather costly, it is best not to invest in one unless you actually need it. Think about all your needs, compare them. Write down the pros and cons.

If you believe you need a pure sine wave inverter, do research and learn which are the best for your specific needs. They come in a variety of shapes, sizes, and power capabilities.

Other Things To Consider:

  • Not all power inverters are equal, but pure sine wave ones are undoubtedly the most efficient.
  • Despite them being the most efficient, not everyone will need one as they are kind of specialized and much more expensive than other options.
  • Pure sine wave inverters supply the smoothest waves of power and do so continually, so they are an excellent choice for official government buildings, such as hospitals.


Pure sine wave inverters are a device that converts DC power, generated from things like energy farms, and turns it into energy that is more applicable to our everyday lives.

AC energy is what the majority of the world runs off of, so power inverters are essential to our way of life. Pure sine wave inverters keep continuous and high amounts of energy flowing to more sensitive technology.

You may read also:

How to Choose the Right Solar Power Inverter for You?

How To Buy A Solar Panel

What Does A Power Inverter Do – Definitive Guide For Power Inverter

What Is A Power Inverter – It’s Functionalities And Applications

Difference Between Modified Sine Wave Inverters And Pure Sine Wave Inverters

How To Make A Power Inverter For Car – Ultimate Guideline

How To Maintain A Power Inverter For Better Longevity

The Best Way To Convert AC To DC

Bob Stevens

Bob Stevens

Hi, I'm Bob Stevens. I spend a lot of time working with power generators and power tools. In my spare time, I like to write about my hobby.

Bob Stevens

Bob Stevens

Robert K. "Bob" Stevens was a British-born American photojournalist for the Sun, a subsidiary of American Media, located in Boca Raton, Florida, United States. He was the first journalist killed in the 2001 anthrax attacks when letters containing anthrax were mailed to multiple media outlets in the United States

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