Electromechanical transducers using an electret

Details Electromechanical transducers using an electret Electromechanical transducers using an electret

H - Electricity

04

R

356/200, 349/67

H04R 19/01 (2006.01)

Patent

CA 1118090

ABSTRACT OF THE DISCLOSURE The invention relates to electromechanical transducers comprising an electret between two electricity conducting electrodes. A solid intermediate layer having a different deformability from that of the electret is placed between said electret and an electrode, the material forming said layer having an electrical resistivity higher that 1015 ohms.cm (for instance a silicone elastomer) and said layer having a smooth and continuous face in intimate contact with the whole of the useful area of the charged face of the electret.

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