Electromagnetism : How Microphone Works

Taylor swift, Demi lovato,Lady gaga and more singers are become successful in their singing carrier. You know what the secret behind their success? It's Microphone!!!!! and their voice too. Microphone is an revolutionary speaking device that so important in concert, parties and other events. So do we know how microphone works? Well we are here to find out.

Microphone is a transducer. It's mean it change sound wave into electrical signal. so this electrical signal can turn into audio signal by amplifier. Microphone comes with two types one is Dynamic another is Condenser. Now we going to look how the both microphone works. lets get started!!

The picture above shown is a dynamic microphone and its cross section. When you look at the cross section, there's diaphragm,coil,permanent magnet and tube for resolve microphone impedance. When you speak in front the microphone the diaphragm will vibrate. This vibration cause the coil move forward and backward in magnet. This movement of coil, the current will induced in alternating current. This current will goes into loudspeaker or amplifier to produce sound in speaker. This microphone is used in concert,parties,events and so on. This dynamic microphone is a reverse working of speaker.

 The picture above shown is a condenser microphone and its cross section. This condenser is working of capacitor. There's two plate in this microphone. the diaphragm is plate that vibrate and the back plate is connected to resistor. This microphone is powered a battery so it can work by charging electric charges between the plate. When we speak, if the diaphragm move towards the back plate, the high charges occur and the capacitance
increase. If the diaphragm further apart from the back plate, the charges will discharge and the capacitance decrease.

This microphone produce weak electric current,therefore a signal amplifier used to overcome this weak current. When this process occurs in this microphone, this electrical signal will turn audio signal by external amplifier.

WHEN YOU BECOME A SUCCESSFUL SINGER,DON'T FORGET TO APPRECIATE  MICROPHONES TO MAKE YOUR VOICE WONDERFUL.