How does a car horn work?
I’m trying to learn more about cars, and I realized I don’t really know how the car horn works. All I know is that I can push a button and there will immediately be a loud blaring from the car. How does a car horn work?
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Answer provided by
Payton Ternus
Answered on Apr 15, 2022
It’s great that you’re learning more about cars, it will help you a lot in the long run!
There are a lot of different components to owning a car, from getting the right coverage in a car insurance policy to knowing the basic internal functions. Let’s break down how a car horn works once you press the button:
- The solenoid (electromagnet) exerts a magnetic force on a thin metal disk made of spring steel.
- The diaphragm flexes, moves the electrical contacts apart, and de-energizes the solenoid.
- The disk springs back into shape, the electrical contacts close again, and the solenoid is re-energized.
- The flexing and de-flexing of the diaphragm causes vibrations, which then produce the horn’s noise.
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