Microphones generally refer to microphones. Microphone, the scientific name is microphone, which is translated from English microphone (transmitter), also known as microphone, microphone. A microphone is an energy conversion device that converts sound signals into electrical signals. There are moving coil type, condenser type, electret and recently emerging silicon micro microphones, in addition to liquid microphones and laser microphones.

Professional production of microphones, its product recording microphones are used to convert sound signals into electrical signals, which are equivalent to microphones.

The structure of the microphone head:

1. Dust-proof net: protect the microphone, prevent dust from falling on the diaphragm, prevent external objects from piercing the diaphragm, and have a short-term waterproof effect.

2. Shell: The support part of the whole microphone, and other parts are enclosed in the shell, which is the grounding point of the microphone and can also play the role of electromagnetic shielding.

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3. Diaphragm: It is a main part of sound-to-electric conversion. It is a tight Teflon plastic film glued to a thin metal ring, and the side of the film contacting the metal ring is plated with a thin layer. The metal layer and the thin film can be charged with electric charge, and it is also an electrode plate that forms a variable capacitor, and it is an electrode plate that can vibrate.

4. Gasket: Support the distance between the two plates of the capacitor, leaving a gap to provide a space for the vibration of the diaphragm, thereby changing the capacitance.

5. Back plate: The other electrode of the capacitor is connected to the G (gate) electrode of the FET (Field Effect Transistor).

6. Copper ring: connects the plate to the G (gate) pole of the FET (field effect tube), and plays a supporting role.

7. Cavity: Fix the pole plate and pole ring to prevent short circuit of the pole plate and pole ring to the shell (S (source) and G (gate) of FET (field effect tube) are short-circuited).

8. PCB components: equipped with FETs, capacitors and other devices, but also play a role in fixing other parts.

9. PIN: Some microphones have a PIN (pin) on the PCB, which can be welded with other PCBs through PIN to connect the front pole type and the back pole type. The structure is also slightly different.