| 摘要 |
An inductive displacement transducer is provided having a probe capable of being displaced within the hollow interior portion of a coil. The coil, which is typically uniformly wound, is connected electrically in parallel with a stable-frequency current-based oscillator which transmits an AC voltage oscillating signal relating to the inductance of the coil. A demodulating circuit, which is capable of converting the AC voltage oscillating signal to a DC voltage level, is connected in parallel with the oscillator. In one preferred embodiment, the coil is covered with a shield which is slit along its length. In operation, the probe is displaced within a hollow portion of the coil such that a change in inductance of the coil results. A corresponding change in the AC voltage amplitude of the signal output of the oscillator is communicated to the demodulating circuit which generates a change in DC voltage level corresponding to the change in the oscillating signal.
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