In this video, i have explained Electret Microphone in Audio and Video Engineering, Television Engineering with following timecodes:

0:00 - Audio Video System / Television Engineering Lecture Series
0:25 - Outlines of Electret Microphone
0:56 - Basics of Electret Microphone
2:36 - Structure of Electret Microphone
5:35 - Working of Electret Microphone
8:07 - Characteristics of Electret Microphone
9:00 - Applications of Electret Microphone

Following points are covered in this video:

0. Microphone
1. Electret Microphone
2. Basics of Electret Microphone
3. Structure of Electret Microphone
4. Working of Electret Microphone
5. Characteristics of Electret Microphone
6. Features of Electret Microphone
7. Applications of Electret Microphone

Engineering Funda channel is all about Engineering and Technology. Here this video is a part of Audio and Video Engineering, Television Engineering.

#ElectretMicrophone, #StructureofElectretMicrophone, #WorkingofElectretMicrophone, #CharacteristicsofElectretMicrophone, #AudioandVideoSystem, #TelevisonEngineering

Details of Electret Microphone, Structure of Electret Microphone, Working & Applications of Electret Microphone:

An electret microphone is a type of condenser microphone that uses a permanently charged material to polarize the diaphragm and backplate, which eliminates the need for an external power supply. It is known for its low cost, high sensitivity, and small size.

The structure of an electret microphone consists of a thin diaphragm made of conductive material, a charged electret material, and a backplate with an electrically conductive coating. The electret material is a type of permanently charged material, usually made of a plastic film with a surface charge that polarizes the diaphragm and backplate. This polarization creates a static electric field that acts as the capacitor in the microphone. When sound waves strike the diaphragm, it vibrates, causing a variation in the capacitance between the diaphragm and backplate. This variation in capacitance produces an electrical signal that corresponds to the sound waves.

The working of an electret microphone is similar to that of a condenser microphone, except that the electret material replaces the need for an external power supply. The charged electret material polarizes the diaphragm and backplate, which creates a static electric field that acts as the capacitor in the microphone. When sound waves strike the diaphragm, they cause a variation in the capacitance between the diaphragm and backplate, which produces an electrical signal that corresponds to the sound waves.

Electret microphones are known for their low cost, high sensitivity, and small size. They are commonly used in mobile phones, laptops, and other portable devices due to their small size and low power consumption. They are also used in home and office applications, such as voice recorders, intercom systems, and security systems.

In an audio-video system, an electret microphone can be used to capture sound for a variety of applications, such as recording music or speech, amplifying sound in a public address system, or broadcasting live events. The microphone can be connected to an amplifier or mixer, which allows the signal to be processed and mixed with other audio sources before being sent to speakers or recording devices.

Overall, electret microphones are a reliable and cost-effective option for capturing sound in a wide range of applications, particularly where small size and low power consumption are important.