The car horn is a device that is frequently used when driving. If a single speaker is used, the sound quality is often poor, and when it is good or bad, and sometimes it does not ring at all, there are many inconveniences to the owner. What should I do if the car horn does not ring or emits abnormal sound? How does the car horn perform routine maintenance and self repair? When the above failure occurs, it is necessary to distinguish whether it is the line fault or the horn itself. Truck horn Let's take a look at how the horn works. When the horn button on the steering wheel or other location is pressed, the current from the battery flows through the loop to the solenoid coil of the horn relay. The electromagnetic coil attracts the relay's moving contact switch to close and the current will flow to the horn. The current causes the electromagnet inside the horn to work, causing the diaphragm to vibrate and emit a sound. Line faults are mainly line virtual connections, such as loose speaker connector terminals, speaker relay contact ablation, and horn speaker switch contact failure at the steering wheel. However, in many horn failures, especially in the winter, there is a problem with the horn itself. Combined with our use environment and other factors, the failure of the horn itself is mainly due to the following reasons: 1. Ablation: If the loudspeaker is prone to ablation for a long time and the impedance is generated, the current flowing through the electromagnetic coil weakens and the electromagnetic suction force cannot attract the armature to drive the diaphragm to normally vibrate, resulting in husky speech and even no sound. However, when the horn is continuously pressed, if a momentary high current passes through the impedance, it can still work normally, so it will be good or bad. 2. The seal is not easy to get wet: Although the inside of the horn is sealed, if the seal is not strict when entering the fog when the car wash or the air in the internal space has water vapor, water vapor can easily cause the contacts to be wet and fail to work properly. 3. Poor contact of electromagnetic coil terminal: Some horns have internal electromagnetic coil enameled wire terminal joints are aluminum metal rivets crimped connection, non-firm welding connection, if the end of the enameled wire insulation paint treatment is not clean or rivet pressure is not reliable and it is easy to produce Virtual connection failure causes the horn to malfunction. This type of failure is the cause of the speaker quality and cannot be repaired. Only new parts can be replaced. Suggestions for using car horns: 1. Remember to prevent the horn from getting wet and find that the horn is flooded as soon as possible with a blower. 2. Do not press the horn for a long time as much as possible, which will easily lead to premature ablation of the speaker contacts. 3. If the horn fails, seek the help of a professional service technician. Do not blindly replace the horn, which may cause unnecessary waste. Lasers And Lights,Uses Of Laser Lights,Nlight Lasr,3 Laser Light Wavelength Ranges Nantong Dinggo Optical Instrument Co.,Ltd , https://www.miaozhunoptics.com