Whats the lifespan of pure sine wave and modified sine wave?

Answer:the lifespan of pure sine wave is a little longer than modified sine wave .

Also the other difference : For example,

(1) at the same situations, both pure sine wave and modified sine wave load the same TV, and the TV service life can be 5 years if it’s loaded by pure sine wave, and the TV service life can be 4 years if it’s loaded by modified sine wave.

(2) At the same situations, both pure sine wave and modified sine wave load the same radio,the radio is nearly no noise in the voice if it’s loaded by pure sine wave. The radio will have noise in voice if it’s loaded by modified sine wave.