In the journey or in daily life, there are too many digital products that may require immediate charging. In this case, the onboard inverter is very important. Of course, some models with higher configurations will be equipped with 220V AC power connections, but if there is no such configuration on the car, you need to use a car inverter. How about choosing so many vehicle inverters on the market? Everyone car to everyone today to popularize the purchase of car inverter knowledge. What is a car inverter? The on-vehicle inverter converts 12V (24V for diesel vehicles) on the car to DC 220V for home use. There are two types of on-vehicle inverters. One is to connect the cigarette lighter, and the other is to install the line. Everyone's car is recommended to choose the cigarette lighter car inverter so that it is not necessary to change the original car line. It is simple and convenient. In general, the maximum current that a car's 12V power supply can withstand will not be very high. In most cases, each depot will design the maximum allowable current as 15A or 20A. Therefore, when using the inverter, it must be clear how much current is allowed for the insurance corresponding to the car's on-board power supply. Everyone thinks that it can't blindly cope with high power. There is no other advantage other than burning the car's insurance. The power required to charge most digital products in daily life is very low. There are rarely more than 100W, you can use the inverter to charge, but these heating devices such as hair dryer, hot fast, electric hot water bag and other usually high power, Everyone's car reminder must not be connected to the car inverter. How to choose the right inverter? 1. Power selection For an average family car, buying an inverter with a maximum power limit of 200W is sufficient. According to everyone’s understanding, the insurance for the majority of household car 12V power supply is less than or equal to 20A, and the maximum allowable electrical appliances are about 230W. For some older models, the maximum allowable current for insurance is only 10A, so the Vehicle-mounted inverters can't just cope with high power and choose the optimal power. For some outdoor workers, it is a group of people who need to use high-power appliances. You can purchase an inverter that directly connects the battery. This kind of inverter can be used for electrical appliances of 500W or more, and can drive small motors and some softboxes with a capacity of 1000W. 2. Output interface After the power is selected, it depends on the output interface of the inverter itself. At present, many appliances use a three-pin plug, which requires a three-hole connector on the inverter. In addition, there are many uses of the USB interface, so it is best to choose the three inverters. 3. Output waveform According to the difference of the output current waveform, the vehicle-mounted inverter is divided into a pure sine wave inverter and a modified sine wave inverter. Among them, the pure sine wave inverter power supply is stable, and it can basically be driven well for common electrical appliances, but the selling price is relatively high, and the quality of the 220V AC output from some high-end inverters is even higher than that of daily electricity. The modified sine wave is actually closer to the square wave and the output current quality is poorer, but in most cases the stability can be guaranteed and it is suitable for ordinary consumers to purchase. 4. Protection function Whenever a car is recommended to purchase a car inverter, it must be confirmed whether it has functions such as over-voltage shutdown, under-voltage shutdown, over-temperature protection, over-current protection, and short-circuit protection. These functions can not only be applied to inverters. It provides protection by itself, and more importantly, it can avoid damage to electrical equipment. What should you watch out for when using an inverter? The on-vehicle inverter is a power product that operates in a large current and high frequency environment, and its potential failure rate is quite high. Therefore, consumers must be careful when buying. When the car owner chooses a car inverter, everyone should pay attention to the following points: Look at the output waveform of the car inverter, it is best not to be lower than the quasi-sine wave; the car inverter must have a complete circuit protection function; manufacturers must have a good after-sales service commitment; circuits and products after a period of time test; vehicle reverse The power of the transformer should not be too large. It is recommended to choose the best around 200W. After the vehicle stalls, everyone must remember to power off the inverter. 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