Microphone is an energy converter that converts sound signals into electrical signals, and is a device opposite to the loudspeaker (electric to sound). It is the terminal of the voice device, the input is the microphone, and the horn is the output. Also known as the microphone, microphone, microphone.

1, from the principle of work: carbon particles, electromagnetic, capacitive, electret capacitive type (the following in the electret type mainly), piezoelectric crystal, piezoelectric ceramic, silica and so on.

2, from size to size, the electret style can be divided into several types.

A series of 8 series of the diameter of the diameter of the diameter of the diameter of the diameter of the series of 9.7 series.

A series of 4 series of the diameter of the diameter of the diameter of the diameter of the diameter of the series of 4.5 series.

There are different heights in each series

3, from the direction of the head, can be divided into omnidirectional, unidirectional, bidirectional (also known as noise elimination).

4, from polarization mode, vibration diaphragm type, back pole type, front pole type.

From the structure, it can be divided into grid pole type welding, grid pressure connection, polar ring connection and so on.

5, from the way of external connection:

Common solder joint type: L type

PIN foot type: P type

Concentric circle type: S type