Difference between Pure Sine Wave, Modified and Square Wave

Here is a image showing how Pure/Perfect Sine Wave looks like:

pure-sine-wave

The AC current we have at wall outlets has this form of wave.

What about Modified Sine Wave and Square Wave?

Are they the same thing?

No: modified sine wave and square wave are different.

Here is an image showing a square wave:

square-wave

And below image shows a Modified sine wave:

modified-square-wave

You can clearly see that there is quite some difference between square and modified sine waves.

Is Modified Sine Wave actually a “modified” version of sine wave?

I don’t think so: Many believe that we should call it a Modified Square Wave.

Modified wave is an altered version of square wave.

Both Modified and Square Waves are bad for your electronic devices including PC.

Consider Pure Sine Wave a Saw that does not have any Tooth. The to and fro motion of this saw will not damage electronic devices due to the fact that it has no tooth.

pure-sine-saw

On the other hand, Square Wave is a saw with big and sharp tooth. Modified wave is quite the same. It just has little less sharp tooth.

 

square-saw

Other posts you may like:

Leave a Reply