What Causes the Car Horn Sound to Become Weaker?
1 Answers
The reason for a car horn's sound becoming weaker may include excessive battery discharge, burnt or poor contact points, loose or poor connections at the terminals, etc. Below is a detailed introduction to car horns: 1. Introduction: The horn is the audio signal device of a car. During driving, the driver uses it to emit necessary sound signals as required or regulated, to warn pedestrians and alert other vehicles, ensuring traffic safety. It is also used for urging movement and transmitting signals. 2. Working Principle: The car electric horn produces sound through the vibration of a metal diaphragm. It consists of an iron core, magnetic coil, contact points, armature, diaphragm, etc. When the driver presses the horn switch, current flows through the contact points to the coil, generating a magnetic force that pulls the armature down, forcing the diaphragm to move. The movement of the armature opens the contact points, interrupting the current and causing the magnetic force to disappear. The diaphragm, along with the armature, returns to its original position due to its own elasticity and the spring plate, closing the contact points again and restoring the circuit. Current flows through the contact points to the coil once more, generating magnetic force and repeating the above actions. This cycle continues, causing the diaphragm to vibrate repeatedly and produce sound.
