The principle of the car horn

Horn, which has two kinds of gas and electric horn speaker, electric horn by electromagnetic coil electricity and power outages, make the metal diaphragm produces vibration and acoustics, sound pleasing to the ear. Electric horn shape is a spiral and basin type, Wireless Speaker used in all kinds of cars. Light passenger cars are electric horn. Air horn using compressed air flow make the metal diaphragm produces vibration, appearance is more long horn (cylindrical), more sound and a higher tone, long transmission distance, multi-purpose on running a long distance of large and medium-sized cars within the city is disabled. Spiral car electric horn attached speaker cone, roll up into a spiral in a compressed volume, beautiful sound loud and clear. Basin shape car electric horn without speaker cone, shape flat Bluetooth Speaker volume, light weight and easy installation, quality slightly but widely used. Basic working principle of spiral and basin shape is the same, by the static and dynamic core, magnetic coil, contact core, diaphragm, and so on. When the driver presses the button, the electricity flowing through the contact through the coil, a coil magnetic suction under the force of moving iron core diaphragm moving armature move off contact, magnetic current interrupt disappeared, the elasticity of the diaphragm in itself and under the action of leaf spring and recovery in situ with moving iron core, contact closure circuit connected to electric current to pass through magnetic coil, contact the repeat the action. So follow bad diaphragm vibration unceasingly, thus the sound. Help the resonant cavity with the rigid connection of diaphragm, can make the vibration smooth sound more pleasing to the ear. Among them the clearance between the contact and contact arm small excitation frequency is high; Gap big excitation frequency is low, that is, different clearance adjustment, speakers will be encouraged by forced vibration of different frequency and different noise generation. Due to the above analysis shows that the horn diaphragm is forced vibration.