| 摘要 |
<p>The transducer (1) includes a support structure (2, 3) in which a metal body (8) is mounted, having a flat surface (8a) and on the opposite side a cavity (8b) for exposure to a pressure to be transduced. A thin wall (8c), resiliently deformable like a membrane under the effect of the pressure, is defined between the bottom of the cavity (8b) and the said flat surface (8a). An inductor (10) comprising a body of ferromagnetic material (11) is securely fixed to the metal body (8) and has a flat surface (11a) facing the flat surface (8a) of the metal body (8) and an annular recess (12) which defines a central core (13) with a winding (16) arranged therein and a surrounding sleeve (14). A spacer ring (9) of paramagnetic or diamagnetic material, and of calibrated thickness, is interposed between the metal body (8) and the ferromagnetic body (11).</p> |
