True sine wave inverter vs Pure sine wave any difference?

[RussN9ZP]

Thanks for the replies. I need it to run a computer tower and monitor.

[Sunny Solar]

Yes there is a difference.. but its the same difference between 6 and half a dozen..

[billvon]

Just marketing terms. There are:

Square wave inverters (rare, old)
Mod-sine inverters (very close to square wave but slightly better)
Stepwise sine wave (old Trace SW series)
True sine wave (most good modern inverters)

The "purity" of the sine wave can be determined by its harmonic content into a given load. Most are pretty pure nowadays; generally better than grid power.

[RussN9ZP]

Is there a difference? I was looking at some xantrex pro watt inverters and not sure if they are pure sine wave or not.

http://www.xantrex.com/power-products/power-inverters/prowatt-sw.aspx