A pure sine wave is an ideal waveform for electrical signals, characterized by stability and smoothness. In contrast, the waveform produced by an industrial frequency inverter may have problems such as harmonics and unstable amplitude. A pure sine wave can better protect electrical equipment and reduce the risk of damage and failure of electrical equipment. Moreover, pure sine wave can also provide a more stable power supply and reduce noise and interference from electrical equipment. Therefore, pure sine wave inverters are more suitable for occasions with higher requirements for electrical equipment, such as medical equipment and precision instruments.