Magnet actuation

Magnet actuation with reed contacts and differently polarised magnets. When passing over the switch in the lengthwise direction, two or even three switching points are possible. If the magnet passes completely over the switch, the switch should be actuated from the front or the movement direction should be transverse to the lengthwise axis of the switch. With an arrangement as shown in figure 1, rotating magnets can be used to realise a simple rotary pulse generator (two pulses per/rotation). Figure 3: Depending on the distance between switch and magnet, it is possible to have either three switching points or just one. Figure 4: With this type of actuation, there are two switching points. With bi-stable contacts, a latching switch that is dependent on either magnet polarity or direction of movement can be set or cleared. Figure 5 shows magnet-polarity-dependent control. Direction of movement has no influence. In figure 6, switch actuation is dependent on the direction of movement. Shown in the example is a movable carrier that carries the adjustably arranged magnets. It is moved back and forth between two (adjustable) end points.

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