What is an automobile circuit?

Most car circuits are DC circuits. Functions: First, it can transmit and distribute electric energy and realize mutual conversion with other forms of energy; Second, it can realize signal transmission and conversion, and carry out signal transmission, exchange and processing.

A circuit is a path through which current passes, forming a closed loop. In other words, in order to achieve a certain function, various electrical equipment and devices are connected in a way to form a current path, which is called a circuit. No matter whether its function and structure are complex or not, each circuit is generally composed of four parts: power supply, load (electrical appliance), conductor and switch (the conductor and switch can also be combined as an intermediate link, that is to say, the circuit is generally composed of three parts: power supply, load and intermediate link). When the switch is closed, there is current in the circuit and the load can work, which is called a closed circuit. When the switch is turned off, there is no current in the circuit, and the load stops working. This is called open circuit, that is, breaking the brake.