INFORMATIE-INVOERINRICHTING.

摘要

A circuit to obtain hysteresis effect in a switch by providing variable impedance controlled by movement of the switch actuator and incorporated in a coupling circuit between a voltage source and a switching circuit. When the voltage coupled from the source to the switching circuit is above a certain level, the coupling circuit has one transfer characteristic controlled by the switching circuit; when the voltage is below that level, the coupling circuit has a different transfer characteristic. The change in transfer characteristic as the coupled voltage passes through that level is such as to enhance the effect of coupled voltage change by a pre-determined amount so that additional reverse movement of the actuator will be required to reverse the status of the switching circuit.