Traditional Culture Encyclopedia - Traditional customs - (2006? Shaanxi) Xiaofan learned the knowledge of electric circuits, thought of grandfather's room light switch at the door, the night switch light is not convenient, it would like to use two single-kn
(2006? Shaanxi) Xiaofan learned the knowledge of electric circuits, thought of grandfather's room light switch at the door, the night switch light is not convenient, it would like to use two single-kn
(2006? Shaanxi) Xiaofan learned the knowledge of electric circuits, thought of grandfather's room light switch at the door, the night switch light is not convenient, it would like to use two single-knife double
In the home circuit, the switch controls the light bulb, the switch and the light bulb are connected in series. In order to turn on (or off) from this end and to the other end of the light can be turned off (or on), that the door and the bedside switch is connected in series. So the fire wire goes through the two switches in series and then into the bulb, and the zero wire goes directly into the bulb.
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