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Time：

2022-05-26

Carbon-type microphone, also known as carbon particle microphone. According to the size of the carbon particles, the carbon particle microphone can be divided into three types: low resistance,

1. Carbon-type microphone
Carbon-type microphone, also known as carbon particle microphone. According to the size of the carbon particles, the carbon particle microphone can be divided into three types: low resistance, medium resistance and high resistance. The resistance of the low-resistance carbon microphone is 30-65Ω, the resistance of the high-resistance carbon microphone is 150-300Ω, and the resistance of the medium-resistance carbon microphone is between the two. Low-resistance carbon microphones are mainly used for magnet telephones, medium-resistance carbon microphones are mainly used for common electric telephones and short-distance automatic telephones, and high-resistance carbon microphones are mainly used for long-distance automatic telephones. telephone.
The advantages of carbon particle microphones are high output power, high sensitivity, simple structure and low cost; the disadvantage is that carbon particles are easily affected by moisture, adhesion and aging, so the basic work is unstable, the sound quality is poor, and the noise is large.