How Does a Car Horn Work?

[BeauAnn]

Car horn works as follows: when the horn button on the steering wheel or other locations is pressed, current from the battery flows through the circuit to the electromagnetic coil of the horn relay. The electromagnetic coil attracts the movable contact switch of the relay to close, allowing current to flow to the horn. The current causes the electromagnet inside the horn to operate, vibrating the diaphragm to produce sound. Types of electric horns: 1. According to the power source, car horns can be divided into electric horns and air horns; 2. By shape, they can be classified as spiral, cylindrical, and disc types; 3. By audio frequency, they can be categorized as high-pitch and low-pitch horns; 4. By wiring method, they can be divided into single-wire and double-wire horns.