Touch Switches And Tactile Switches Information
Touch switches and tactile switches operate by touching or pressing to make a connection. Touch switches are touch-operated devices that do not need moving parts. Tactile switches are electromechanical and supply tactile feedback.
Specifications to contemplate when searching for touch switches and tactile switches include maximum current and maximum power, shock and vibration ratings, and compliance with Ingress Protection (IP) standards.
Touch switches operate by human touch, as opposed to creating or breaking a mechanical connection by pushing a button or flipping a switch. Many alternative principles can be used to operate a touch switches. Examples include:
– Radio reception
– Acoustic resonance dampening
Typically, touch switches and don’t provide any tactile feedback.
Tactile switches are so named because they provide tactile feedback to the user when the button or switch has made contact with the control panel beneath, usually a printed circuit board (PCB).
Tactile switches are electromechanical switches designed for keyboard, keypad, instruments or interface control-panel applications. They’re used extensively in aerospace and aviation, defense, communication and all electronic instrumentation applications. Specialized touch switches and tactile switches are also available.
Selecting touch switches and tactile switches requires an understanding of switch types. Choices include tact switches and keyswitches.
Tact switches are tactile electromechanical switches for keyboards, keypads, instruments or interface control-panel applications. Keyswitches are tactile mechanical switches which are designed for keyboards and keypads. Both forms of tactile switches give the user sensor or tactile feedback that the button or switch has made contact with the control panel beneath, usually a printed circuit board (PCB).
Touch switches and tactile switches also include dome switches, tactile switches which are so named for their location under a rubber bubble or dome. When a dome switch is pressed, it collapses the dome and makes the switch contact. Dome switches are used in keywords and membrane keypads. They’re relatively quiet when operated, and are an excellent choice for office and consumer environments. Tactile metal domes and metal dome arrays are also commonly available.
Accessories for touch switches and tactile switches such as dome switches include dome placement pens and automatic dome placement systems. A dome placement pen is a handheld device for the manual placement of a metal dome. An automatic dome placement system can be used to position large numbers of tactile metal domes on PCBs, membranes, or flex circuits.