What are the characteristics of automobile electrical appliances?

Features of automotive electrical appliances: 1, DC power supply: Because one of the power supplies on the car is the battery, it is a DC power supply, and the battery must be charged with the DC power supply after discharge. So the generator on the car must also output DC power. 2. Adopt low-voltage power supply: the rated voltage of the automobile electrical system is 12v, 24V. At present, gasoline vehicles generally use 12V power supply, and heavy-duty diesel vehicles mostly use 24V power supply. 3. Single-wire system: Generally speaking, the connection between electrical equipment and power supply requires two wires, one is live wire and the other is neutral wire, thus forming a loop. All electrical equipment in the car is connected in parallel, with good self-conductivity. 4. Negative electrode grounding: Because the car adopts single-wire system, one of the two lines of the electrical system must be replaced by the metal body of the car. When wiring, one pole of power supply and one end of electrical equipment should be connected with metal body. This connection is called grounding.