The car inverter is a kind of power converter that can convert 12V direct current into 220V alternating current which is the same as the mains power for general electrical appliances. 
From the output waveform, the car inverter can be divided into sine wave output and square wave output. The former output is the same sine wave alternating current as the grid we use daily, which can adapt to various loads, but the circuit structure is more complicated and the volume is larger. The latter circuit is simple, but it is picky about the load and cannot drive inductive loads.
Combining the advantages of the two, the current commercial vehicle inverters without exception have adopted the scheme of outputting an analog sine wave. Compared with the square wave, the use effect has been improved. It can not only drive inductive loads, but also has a small size and weight. Lightweight, high conversion efficiency, stable output voltage, strong reliability, and perfect protection functions.
How should we choose a good car inverter?
1. Choose a metal shell inverter: The car inverter is more likely to generate heat due to its large power. If the internal heat cannot be dissipated in time, it will affect the life of the components, and in the worst case, a fire will occur. On the one hand, the metal shell has good heat dissipation characteristics, and on the other hand, it also avoids the risk of fire.
2. In the case of products with the same power and similar size, the heavier one is preferred: the heavier product weight means that the outer shell is thicker, which is good for heat dissipation. It also means that the internal transformer has high power and can drive high-power loads for a long time.
3. Perfect protection function: A good car inverter should have perfect protection function. It can protect your car and power supply under various conditions. It should also have sound and light alarm function to remind you to This situation is dealt with in a timely manner. Generally, the protection functions that should be possessed are input under-voltage protection, over-voltage protection, over-temperature protection, output overload protection, and output short-circuit protection.
4. Conversion efficiency: Conversion efficiency is a very important indicator of the inverter. The higher the inverter efficiency, the longer the battery is used, and the less the inverter generates heat. Generally, it should reach more than 90%.
5. Pay attention to the form of the output socket: it is necessary to be able to use the two-phase and three-phase plugs of the national standard.
