Novel microphone

The utility model discloses a novel microphone comprising a housing. The inner side of the housing is coated with an insulating layer. The housing is in a cylindrical shape. A recess is arranged on the center of the bottom of the housing. A metallic ring vibrating diaphragm is placed on the recess and is in a cylindrical shape. A circuit board equipped with a field effect transistor is placed on the cylindrical opening of the metallic ring vibrating diaphragm. The recess has a depth from 0.02 to 0.05mm and a diameter from 2 to 9 mm. The novel microphone has advantages that three components, including a pole plate, a plastic ring, and a gasket, in the manufacture of the novel microphone are eliminated compared with that of a conventional microphone so as to reduce cost, that automatic assembly of automatic equipment is facilitated, that three processes are eliminated such that labor cost is decreased; and that the internal space of the microphone is enlarged such that a field effect transistor with larger size