You must have heard about inverters and how they convert direct current (DC) to alternating current (AC). Basically and generally speaking, an inverter converts “raw current” into “usable current”. The inverter acts as a channel since it doesn’t generate any power. It directs electricity from a DC source and converts it to AC before it can power your devices and even solve your emergency power problems.

Before buying, you will definitely have such a question, what is the difference between a pure sine wave inverter and a modified sine wave inverter? Well, we will answer your question in detail next.

The Waveform Difference

First, let’s take a look at the waveform below.

Is there a noticeable difference? This is the current waveform after testing the two inverters on the oscilloscope. This difference is caused by their respective circuit design layouts. Although the inverter efficiency can be provided to 90%, because the modified sine wave inverter has 20% harmonic distortion, and the pure sine wave is basically very low. The harmonic distortion of FCHAO pure sine wave inverter is less than 3%, so the price will vary greatly.

The Difference in Efficiency

Due to the need to modify the output waveform while the current is flowing, a modified sine wave inverter uses some of the generated power, which reduces the power sent to the appliance and affects the performance of the device. Also, most modern appliances will not run smoothly due to the “jittery” nature of the power supply. On the other hand, the pure sine wave inverter does not need to modify the AC waveform, so the conversion efficiency is high and smooth. The efficiency of the FCHAO pure sine wave inverter is around 90%. Using this type of equipment will run trouble-free.

The Different Features and Compatibility

The functional characteristics of the pure sine wave inverter and the modified sine wave inverter are basically suitable for and combined with various electrical appliances in daily life, but the main difference between the two is that the modified sine wave inverter cannot be used for “Inductive Loads”.

In other words, high-power electrical products made using the principle of electromagnetic induction, such as motors, compressors, relays, fluorescent lamps, etc.

This type of product requires a starting current that is much larger (about 5-7 times) than the current required to maintain normal operation when starting. For example, a refrigerator that consumes about 150 watts of electricity during normal operation can have a starting power of more than 1,000 watts.

In addition, because the inductive load will generate back electromotive force voltage at the moment of turning on or off the power supply, the peak value of this voltage is far greater than the voltage value that the vehicle inverter can withstand, and it is easy to cause the vehicle inverter The instantaneous overload will affect the service life of the inverter.

The pure sine wave inverter does not have such a problem, so the mainstream on the market is also a pure sine wave inverter.