Difference Between Pure Sine Wave and Modified Sine Wave

Waveform Type Comparison

Inverter output waveforms are primarily categorized into pure sine wave and modified sine wave, which differ significantly in waveform quality, application scope, and cost.

Advantages of Pure Sine Wave

• High waveform quality, THD < 3%
• For precision instruments
• Smoother motor operation with reduced noise
• No interference with sensitive electronic devices

Correction wave limitation

• Significant waveform distortion
• May cause motor overheating and noise
• Not suitable for precision instruments and medical devices
• Lower cost

Rungtec's full range of inverters use pure sine wave output technology to deliver high-quality power for industrial equipment.