1. What is a dual-control switch?
1, type of double control switch
Double-control switch can be divided into single-double-control switch, double-control switch and triple-double-control switch due to different switch buttons on the control panel. As the number of connections increases, the difficulty of wiring will also increase. At this time, a comprehensive double-control switch wiring diagram can help a lot. Here, the principle, connection mode and wiring diagram of these three double-control switches are explained one by one.
2. What is a dual control switch?
First of all, let's learn what a dual-control switch is. Double-control switch refers to controlling a device in two places respectively. For example, if it is a lighting lamp, you need to enter the door to control the lighting in the living room. When you go to sleep in the bedroom, you will get tired of turning off the lights in the living room. You can also install a switch in the bedroom to control the lighting in the living room. Similarly, it is common to control a motor in two places in a factory, so dual control means that there are two buttons on two panels in different places, and * * * controls two power supplies to control the same equipment (such as lighting) in different places.
Second, the single and double control switch wiring diagram (including principle and wiring method)
1 single and double control switch wiring diagram
Wiring diagram of single and double control switch
2, the principle of single and double control switch
A single double-control switch is actually two single-pole double-throw switches connected in series and connected to the circuit. Each single pole double throw has three terminals, which are respectively connected with two contacts SPDT a knife.
3, single and double control switch connection
Connect two contacts of two single-pole double-throw switches, namely, contact 1 of switch 1 is connected with contact 1 of switch 2, and contact 2 of switch 1 is connected with contact 2 of switch 2, and then the knives of the two switches are connected to the two ends of the lamp as a whole switch. Thus, when the blades of switches 1 and 2 are simultaneously connected to their respective contacts 1 or contact 2, the circuit is connected and the lamp is lit. If one knife of two switches touches contact 1 and the other touches contact 2, the circuit is blocked and the light goes out. So both switches can control the lights. These two switches can be placed at the upper and lower ends of the stairs or at both ends of the corridor, so that the lights can be turned on before entering the corridor and turned off at the other end after crossing the corridor, which can not only illuminate, but also prevent people from wasting electricity when the lights are on.
Three. Wiring diagram of double control switch (including principle and wiring method)
1 Wiring Diagram of Double Control Switch
Double control switch 1 wiring diagram
2, the principle of double double control switch
The definition of double control switch is similar to that of single control switch, the only difference is that double control switch is a switch of two buttons, and single control switch is just a switch of one button. Then what is a double control switch? In fact, it is very simple, that is, on a panel, two buttons are used to control two electrical appliances, that is, two switches are used to control these two circuits.
3. Wiring of double control switches
First, connect the middle terminal of a double-control switch to the live wire, then connect the middle terminal of another double-control switch to the lamp holder (or the central tongue of the screw lamp holder), and then connect the back and forth wires, that is, connect the upper and lower terminals with two green wires at will; The zero line is directly connected to another contact of the lamp holder (or the thread of the screw lamp holder), thus completing the connection.
Double double control switch wiring Tu Tu 2
Four, triple double control switch wiring diagram (including wiring method principle)
1 and triple double control switch wiring diagram
Wiring diagram of triple double control switch
2, the principle of triple double control switch
The principle of triple double control switch is the same as the above two double control switches, except that one control panel is set with %E at the same time.
Double switches are generally used in stairs (the switch of the middle light can be controlled upstairs or downstairs) and bedrooms, and the switch of the light can be controlled at the door and bedside. With the popularization of acousto-optic control, its application in stairwells has decreased, mainly in bedrooms and villas.
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