| 摘要 |
<p num="1"><br/><br/><br/>A micro-switch comprises at least one coil (22) of elongate electrically <br/>conductive material mounted on the support means (16). A movable actuator <br/>portion (20) of electrically conductive material is attached to the support <br/>means (16) so as to be movable against resilient means (10) of the micro-<br/>switch and so as to be adjacent to the coil (22). Pulse inductive circuitry <br/>(30, 32, 34, 36, 43a, 52, 54) is connected to the said at least one coil (22), <br/>and constructed to switch from one condition to another when the actuator <br/>portion (20) is moved against the force of the resilient means (10) beyond a <br/>predetermined threshold point as indicated by pulsoinductive monitoring <br/>effected by the pulse inductive circuitry (30, 32, 34, 36, 43a, 52, 54). As a <br/>result of this construction, there are no physical contacts which are brought <br/>into and out of contact with one another to effect the change in the <br/>electrical condition of the micro-switch.<br/>
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