| 摘要 |
<p>A linear motion or direction of rotation detector has a single differential stage using field plates whose resistance can be varied by altering the magnetic flux passing through them, e.g. by moving an iron member past the plates. The differential stage output is in series with a hysteresis switching stage. Pref. the output voltage of the switching stage indicates the position of the iron member relative to the differential stage. The iron member is pref. a gear wheel with a tooth/gap ratio other than 1:1, pref. 1:3. The switching stage is pref. an operational amplifier with a coupling resistor between its output and its output and its non-inverting input. There is a single operational amplifier (OP).</p> |
