Patent ID: 8175299

Claim:
A condenser microphone mountable on a main PCB, the condenser microphone comprising: a cylinder-shaped case having one side which is opened and the other side which is closed; a first metal ring inserted into the case for an electrical connection; a disk-shaped back plate having a sound hole to be connected electrically to the case through the first metal ring; a ring-shaped spacer; a cylinder-shaped insulating ring having an open top part and an open bottom part to provide electrical insulation and mechanical support; a diaphragm inserted into the insulating ring and facing the back plate while interposing the spacer between the diaphragm and the back plate; a second metal ring being connected electrically to the diaphragm and supporting mechanically the diaphragm; and a PCB mounted with electronic components and formed with a sound hole, the PCB being connected to the diaphragm and the back plate through the second metal ring and the case, the PCB including connection terminals connected to the outside.