| abstract |
PROBLEM TO BE SOLVED: To provide an electromechanical transducer having low manufacturing cost, high heat resistance, easy miniaturization and high operational stability, and a method for manufacturing the same. SOLUTION: A vibrator (vibration plate) 14 made of a conductor having a flat vibration surface, a flat first main surface facing the vibration surface of the vibrator (vibration plate) 14, and parallel to the first main surface. , A dielectric polarization plate 13 having the same polarization direction, a back electrode 12 joined to the second main surface of the dielectric polarization plate 13, a vibrator (vibration plate) 14 and a back electrode 12 is a microphone capsule provided with induced charge measuring means (21, 9) for measuring the charge induced with the displacement of the vibration surface between the two. Here, the induced charge measuring means (21, 9) includes an amplifier (FET) 21 connected to the back electrode 12 and an output circuit 9 connected to the amplifier (FET) 21. [Selection] Figure 1 |