What three kinds of power supply voltages do cars use?

Automobile power supply, also known as power inverter, is a convenient power converter, which can convert DC 12V DC into AC220V AC which is the same as the commercial power for general electrical appliances. Named for its frequent use in cars. Automobile power supply is generally powered by automobile battery or cigarette lighter. First, such low-voltage DC is converted into DC of about 265V; Then there is the real transformation stage, which converts high-voltage DC into 220V and 50Hz AC. With the car power supply, you can move all the small household appliances in the car, such as mobile phones, laptops, digital cameras, car refrigerators, cameras, DVDs and so on. So that people feel at home in the car. Since its appearance, many limitations of using electrical appliances in automobiles will no longer exist, and people can really enjoy the feeling of "walking with their families and connecting with the world".

Automobile power supply is not only suitable for vehicle-mounted system, but also can be used in the situation where there is DC power supply of DC 12V, which converts DC 12V into AC220V, bringing convenience to people's lives. The automobile power supply fully considers the external use environment, and will be automatically protected and turned off in case of overload or short circuit. The output voltage of automobile power supply can be confirmed to be stable through self-feedback, and the change between no-load and rated voltage is less than 10V. It should be noted that the purpose of automobile power supply is to output the same voltage as the commercial power to meet the needs of electrical appliances, but in fact, the automobile power supply outputs an analog sine wave, while the commercial power is a real sine wave, which is slightly different and generally does not affect the use, which is determined by the working principle of automobile power supply.

-Excerpted from Baidu Encyclopedia