There can be some user confusion in the naming of tactile switches in that they are often referred to as push button switches. Today, tactile switches are widely used as input devices across thousands of commercial and consumer devices. The domed design provided tactile feedback along with a more robust method of actuation plus better longevity. Their lack of tactile feedback and poor performance was quickly met with resistance until the introduction of devices with metal domes as part of the switch design in the late 1980’s. Switches of this type began as membrane, or screen-printed switches in the early 1980’s for use in keyboards and keypads. These “normally closed” tactile switches are also available from CUI Devices. Tactile switch models are also available that turn off current when the switch is pushed and turn it back on when released. This tangible feedback gives some assurance to the user that the switch has operated and a signal has flowed. To give a shorter definition, a tactile switch is a momentary action device whose operation is perceptible by touch. Current flow is turned off when the switch is released. What are Tactile Switches?Ī “tactile switch” is one type of widely used switch that completes an electrical circuit typically when pressure is applied to the device by the user, which then gives the user a perceptible “click” or haptic bump in response, indicating current flow. However, electrical switches come in thousands of styles, sizes, and ratings, while encompassing an even larger number of features, specifications, and footprints. If that was all you needed to know about switches, it would be a very short story. An electrical switch, in the most basic sense, is a device that turns an electric current either on or off.
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