| 摘要 |
An electrical circuit translates the capacitance change of a variable area capacitive transducer into a d-c voltage change. The transducer has two electrodes, and the surface of one electrode is anodized or otherwise provided with a dielectric layer. One of the two electrodes is nonlinear, having an apex point nearer the other electrode than the remainder of the electrode surface. As a force is applied to the deformable one of the two electrodes, there is a change in the effective contact area between the electrodes in accordance with the applied pressure, producing a resultant change in capacitance. The signal translating circuit produces a d-c output signal which varies as a function of the transducer capacitance change.
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