It's quite the opposite, the microphone picks up the sound and the speaker amplifies it.
Dynamic microphones use the principle of electromagnetic induction. The metal coil is mounted on the diaphragm and then placed between the magnetic field of the magnet. As sound pressure changes, it continually moves within the magnetic field. generate an induced current. Convert sound signals into electrical signals. Its transduction principle is very similar to that of a loudspeaker.
Audix dynamic microphone
The phenomenon of electromagnetic induction is widely used in production, life and scientific research. Please list the devices that use the principle of electromagnetic induction: ①______.
| Applications of electromagnetic induction phenomena are generators, dynamic microphones, transformers, etc. The dynamic microphone pproduces sound information, and the current that changes direction is amplified by the power amplifier and then transmitted to the speaker. The current that changes direction causes the coil to generate a magnetic field that changes direction. The magnetic field generated by the coil interacts with the permanent magnet, causing a change in direction. the coil to continuously vibrate back and forth. Drive the paper plate to vibrate and restore sound. So the answer is: electromagnetic induction, sound, direction. |
| The phenomenon of electromagnetic induction has many applications in life as long as the induced current is generated by cutting the current. magnetic induction line through a wire, The principles used by the instruments are all principles of electromagnetic induction; There are many examples in life: such as generators, microphones, transtrainers, etc. ; The answer is therefore: microphone generator; |