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Portable Lavaliere Radio Transmitters Electret Condenser Microphone

  • EM1465UL-12H-GP

  • FBELE

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1、 Electret: A dielectric material that can maintain its polarized state for a long time. This type of dielectric is generally a polymer. For example: polypropylene, polytetrafluoroethylene, etc.

2、 Microphone: A transducer that converts sound signals into electrical signals. According to the working principle, it can be divided into: dynamic coil type, electromagnetic type, piezoelectric type, and capacitive type. Among them, capacitive type can also be divided into two types: audio frequency capacitive microphone and electret capacitive microphone.

3、 Electret condenser microphone (ECM): The specific application of electret in electroacoustic transducers - microphones. The classification of ECM: diaphragm type (Foil), back type (Back), and front type (Front).

Characteristics of diaphragm type ECM: the combination of electret and diaphragm.

The metal plated thin film and the backing plate form an air dielectric capacitor. Charge the electret to form an electric field. E=Q/C sound waves cause the film to vibrate, alter capacitance and electric field, and generate electrical signals. △ E=Q/△ C

The characteristic of the back electrode ECM is that the electret and the electrode plate are combined into one.

Electret Condenser Microphone

FBELE produces high-definition, high restoration, high signal-to-noise ratio, low distortion, and low noise electret microphones. It is a professional research and development and production factory equipped with standard acoustic laboratories and B&K audio analyzers. It has a 25 year production factory and imported FET cores, customized as needed, and free samples


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