Membrane switch might sound a confusing term to many and what actually it is might be completely unknown. To help one understand the term in a simple way it can be said that this is a kind of electrical switch necessary to turn a circuit on and off. Like other electrical or mechanical switches, this one also is responsible for controlling the electricity flow in a circuit. Most popular applications can be found in an air conditioning system, HMI or Human Machine Interfaces, TV remote control, control panel, lamps, microwave oven panel, etc. There are many topnotch membrane switch manufacturing companies and every membrane switch manufacturer employed is thorough with their task.
This special type of electrical switch comprises one or multiple contacts designed with a flexible substrate. They generally have four layers; the topmost layer happens to be a graphic interface marked with printed logos and buttons. Beneath it is a printed circuit or an electric switch, which is printed on ITO (Indium tin oxide) PET (Polyethylene terephthalate) with conductive ink. For controlling the flow of electricity it is very important to use conductive ink in a membrane switch. Every membrane switch manufacturer will confirm this fact that if the ink used is non-conductive, electricity will not flow through it. This is the reason why such types of switches always use ink featuring graphite, copper, and silver. Such switches are also found to support multiple types of backlighting options, like electroluminescent (EL), light-emitting diode (LED), and optical fiber. When it comes to the selection of switches, membrane one enjoys huge preference because of their impressive flexibility. It can be bent and flexed to at a certain extent without any fear of damage or breaking it in halves. This quality gives them a competitive edge when compared to other types of switches, especially mechanical ones. After learning about its flexibility one should not develop an impression that membrane switches are not durable. It will be a mistake to think so. This type of switch happens to be remarkably tough, strong and durable. Membrane switch manufacturer also says that it is also possible to manufacture membrane switch designed with water-resistant properties. The traditional switches can be given a positive twist quite easily. On replacing printer silver with copper and polyimide it produces a Kapton circuit, which features a higher current capacity and greater resistance to moisture compared to traditional membrane switches. An impressive level of durability and strength helps membrane switches become a popular choice. Coupled with these, its flexible design makes the switch type feature even more utility value. They, therefore, are ideal for use in small devices One can, therefore, find popular usage of such switches in mobile phones and computers these days. It is always advisable to buy such switches from a well-established company that enjoys a considerable market reputation for quality offerings.
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September 2019
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