Do you know how to buy reasonable switches?
2008-08-01

                                                                                       Do you know how to buy reasonable switches?            Switches open and close electrical circuits, allowing power to flow through lights and appliances. In recent years, there has been something of a Renaissance in light switches.             With the continuous improvement of people's standard of living, home decoration now attracts people's more attention, as part of the various household lighting switches, people’s demand of the switch on the appearance and quality requirements are also getting higher and higher.               However, due to the increase in switching products, when people in the purchase of household switches, always pick a confused. Do you know how to select a reasonable switch? Below let’s together have a good understanding about the various switches!              Any switch designed to be operated by a person is generally called a hand switch, and they are manufactured in several varieties. Toggle switches¡¢Pushbutton switches¡¢ Selector switches¡¢ Joystick switch¡¢Proximity switches¡¢ Speed switches¡¢Temperature switch¡¢Liquid level switch¡¢Membrane switch¡¢ Sensor Switch¡¢ Touch switches and so on.              In our daily life, we generally use the lasts three switches which are being used for lighting. Now, let us to focus on the lasts three switches. Membrane switch has the following features and advantages: 1. Perfectly sealed, water-proof which can be used in all working conditions. 2. Low cost & high reliability                                                  3. Ease of custom design (size, shape & color) 4. Very slim & flexible 5. Compact assembly & combined function 6. Embossed and metal dome available 7. Embedded SMD LED available Membrane switch is best used in the potentially wet areas like bathrooms and kitchens, such as Water Heater in the bathroom. Sensor Switch has the following features and advantages: 1. Small size & compact space. 2. Terminals gold plated to enhance the life. 3. Special structure; increased strength between housing and base. 4. All plastic material subject to industrial purpose meets with UL94V-0 grade; high temperature and fireproof function caused by contact oxidized. 5. Suitable to IC trigger signal. 6. Complete replacement of mercury switch and meet with environmental protection. So it is suitable for application of the corridors where electricity occasionally be used, both efficient and convenient. Touch switches has the following features and advantages: 1. Can be any size from very small (though a finger is roughly a 15mm circle) to very big (the largest we have made was 4000mm square for a dance floor) 2. Can have a wide range of closure and release pressures from less than 10g to more than 15kg. A good example was a switch designed to close when a full beer bottle was placed on it and open if the bottle was empty. This was used to monitor bar staff! 3. The lifetime of a touch panel is governed by the 'abrasiveness' of the human finger - lifetimes in excess of 10 years can be easily achieved. 4. Touch switches can also be activated by simply cleaning the panel. Considering what have been said above, we can see clearly that Touch switches are suitable for application in corridors or bedrooms where it is convenient to light quickly and spend less room. 

          According to the "China Statistical Yearbook of fire" in 2006 , electrical causes of fire triggered by the total number of fires of all types of 26.1 percent, the statistics ranked in the top, and the switch because of the electrical socket caused the fire accounted for a large proportion.         So in order to be sure of our family’s safe, we should be no more careful when buying switching.          Now let's talk about how to choose switches:      Look at the shell material first. The main switch brands on the market generally expected choice of PC, PC material known as bullet-proof plastic, impact resistance, and high temperature and difficult to change the characteristics of the electrical switch to control is very important. Relatively good switch front panel and the back of the PC base are expected, but in general the switch on the base in black nylon material to replace the PC expected, this will reduce much of the cost.       Second to look at the contacts, this is in the process of conductive parts. Contact one depends on the size (the bigger the better), other depends on the material.       At present there are three main contact, silver-nickel alloy, silver cadmium and silver alloy. Silver-nickel alloy is the ideal contact materials, conductive properties, hardness is better; it was not easy of rust. Cadmium silver alloy contacts in other areas is also relatively well, but they are elements of heavy metal cadmium, on the one hand harmful to human beings, on the other hand, and the integration of BOC also is not ideal, will contact the surface of small particles of metal cadmium, conductive May be pulled out when the arc.        Silver is not appropriate to contact, the electrical conductivity of really good, but relatively soft texture sterling silver, is still very easy to oxidation. Soft texture, switch more contacts on the deformation of the oxidation of the conductivity of rust will be a lot worse, rust, also easily fever, it is easy to put the contact burn over. The third look at the structure. Now are the mainly large panel-style which both looks and feels than the thumb-style and better than before. Thumb-the biggest problem is easy to get stuck, because the moment is rather short, relatively small margin switching action, spring or slightly Microsoft's strong point, so the switch may get stuck. 1¡¢Merlin 2¡¢Luo Gelang 3¡¢Siemens 4¡¢TCL 5¡¢Simon 6¡¢ Lang can 7¡¢Clipsal 8¡¢Space-based 9¡¢Flying birds 10¡¢Hong yan 

This is China's 10 major switch industries brands; you could make it as a reference when buying switches.