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One of the circuits that control one light in multiple placesb

Source: InternetPublisher:难得正经 Keywords: BSP switch Updated: 2021/12/24

26. One of multiple <strong>circuit</strong>s that <strong>control</strong> a lamp b.gif

In a house or on a stairway, it is sometimes necessary to turn the same light on and off in two or more places.
(1) One of the multi-ground control circuits for electric lamps
    is shown in Figure 2-26. It can be seen from Figure 2-26 (b) that the wiring of switches S2 and S3 is exactly the same. If
one light is controlled in three places, just cancel the switch in the middle; if one light is controlled in four or more places , then Just increase the number of
switches in the middle.


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