Principle Of Rocker Switch And How To Choose

Principle of rocker switch

The working principle of the rocker switch is relatively simple. Once the power switch is pushed from ON to OFF to ON, the twisting spring exercise in the power switch will skew the active contact point, and then create an electrical connection grounding according to the exported contact point.

The power switch consists of two key components, an actuator and a set of contact points. The actuator in the power switch moves to increase the force to the contact point to open and close the power switch, while the contact point group will determine whether the power switch is set as on/off. Here, a group of contact points in the power switch allows the flow of electricity when the power switch is set to the ON contact point, and cuts off the current when the power switch is turned to the off position.

Once this power switch is turned on, the contact point will be turned off. So at this point, the contact points are touched to allow the current flow between them. Similarly, once the same power switch is turned off, the contact point will be pulled to the open position. Once this contact point is in the open position, they will not touch each other, so there is no current flow between them.

How to purchase power switch

1. Look at the casing

Good power switch products on the market generally use PC material, also known as EXO glue, which is impact resistant, heat-resistant and not easy to fade. This feature is crucial for controlling the power switch of electrical appliances.

2. Look at raw materials

There are mainly three kinds of raw materials for contact points: silver nickel alloy, silver cadmium aluminum alloy and silver. At present, silver nickel alloy is an ideal raw material for contact points, with appropriate electrical conductivity and strength, and is not easy to be oxidized and rusted in air.

3. Look at the structure

Nowadays, the key of the power switch is the big rocker, and its shape and touch are better than those of the thumb type before. The large rocker switch greatly reduces the contact between the hand and the control panel gap, and prevents the accidental electric shock accident that may occur due to the wet and cold arm. The advantages of the large current switch are that the power of household appliances is particularly high today, and the regulations on the power load of the switch are relatively high, which should be at the moment when the household appliances are plugged in.

The rocker switch is properly assembled

Nowadays, most of the power switches are fixed by flexible mechanical equipment, which is fast and convenient to install and use. Just press the power switch from the control panel to the outside and inside. There are similar barbs on both sides of the switch, which can be stuck independently, and then connect the wires from the opposite side. Note that the size of the switch should be suitable, otherwise the power switch may be damaged or it may not be stuck.

There are two opening clips on the two sides of the four legged rocker switch with lights. Point the power switch to the hole in the board and push it down until the clip puts the opening copy on the board.

Rocker switch, the red light is on when it is connected. Sometimes it can't be closed, but it can't be bounced back, and the air leakage switch often trips. The solution is as follows:

There is a copper sheet in the internal structure of the rocker switch, and the core has a tension spring support point. The tension spring is offset and its plastic bracket is aging and deformed, and the power switch is not flexible. You can take it out to have a look after powering off. If the plastic part is not damaged, it may be recovered. The zero line inside the switch is direct, which has nothing to do with the power switch components. Therefore, if the power switch trips the air leakage switch, it is caused by the cable sheath of the zero line of the switch. The damaged section can be cut off and wired from the beginning. Pay attention to ensure the insulation performance. It may also be that there is a short circuit fault in the display lamp pin, so you can start wiring from the beginning.