CONDENSER MICROPHONE, CAPABLE OF CONVERTING THE ELECTROSTATIC CAPACITY CHANGE OF A CONDENSER INTO AN ELECTRIC SIGNAL

摘要

PURPOSE: A condenser microphone is provided to obtain an electric signal based on the electrostatic capacity change of a condenser by including a vibrating film electrode and a fixed electrode.;CONSTITUTION: A condenser is composed of a vibrating film electrode(12) and a fixed electrode(14). A signal processing substrate(17) is arranged at one opening side of a cylindrical case. The signal processing substrate includes a conversion circuit which converts the electrostatic capacity change of the condenser into an electric signal. The electrostatic capacity change of the condenser is generated by the vibration of a vibration film electrode. A gate ring(15) is arranged between the condenser and the signal processing substrate in order to electrically connect the condenser and the signal processing substrate. A switch substrate(11) is arranged at the other opening side of the cylindrical case.;COPYRIGHT KIPO 2011