DIAPHRAGM FOR ELECTRONIC CONDENSER MICROPHONE

摘要

The oscillation plate (1) of electret condensor microphone for improving the electrical properties of microphoen comprises a thin metal film (11) at upper layer and resin film (12) at lower layer. The synthetic resin ring (2) is mounted on the edge part of the resin film (12) and the metal reing (3) is installed on the edge part of thin metal film (11).