How much do you know about membrane switches? Surely, not much!! Let us understand what exactly a membrane switch is all about. Basically this is an electrical circuit for turning the electricity on and off. It is very different from a usual mechanical switch. While mechanical switches are made of plastic and copper, a membrane circuit is printed on polyethylene terephthalate or Indium Tin Oxide. For the purpose of printing on these surfaces the ink used is made of conductive elements like copper, silver or graphite. A membrane switch generally has four or more layers, out of which the topmost layer is the graphical user interface. This graphical layer is followed by the circuit itself. A membrane switch basically works on low voltage loop and then it supplies signals momentarily. The major advantage of using a membrane switch is their durability, low profile and cleaning easiness and sealing ability. Other benefits include easy interface, easy to clean, less abrasions, reliable, attractive, and long life. These days membrane switches are used in lots of variety of applications which include industrial, commercial and medical products. Typical applications of the membrane switch products can be seen in microwave oven, air conditioner control panel and television remotes. Membrane switches are also being used in panels of computer and mobile handsets. Their critical use comes to play where graphic interface like touch screens, keyboards etc. are required. Other applications of membrane switch include medical equipment, industrial panels, retail equipment, instrumentation, household appliances, consumer products etc. Commercially, we can see the use of membrane switch at a petrol pump or at gym with latest exercise machines or at various vending machines also.
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