— Five BASIC LAYERS OF A MEMBRANE SWITCH
A Membrane Switch can be as simple as a two layer construction or a multi-layered complicated assembly. Regardless, as a momentary switch, must contain a Membrane Layer and a Static Layer.
All other layers required for decoration, backlighting, adhesive, tactile response and rigid support are all optional.
A short explanation and example of each layer:
Membrane switches are thin and flexible electronic switches that have a similar function to electric switches. They are typically low-voltage and are continually replacing the older push-button types of switches.
A membrane switch works by permitting the momentary opening and closing of a circuit. Activation of the circuit is accomplished by touching the preferred keypad button on the device that uses membrane switches. This causes the switch contacts to connect and permit continuity and current flow. The connection or circuit is broken as soon as the finger is released, making it a momentary switch.
Membrane Switches classification Tactile membrane switches Tactile switches basically include all switches that have a metal dome to achieve action that is created by pressing. (more…)
ESD (Electrostatic Discharge) is the term used to describe the sensitivity of electronics components to static electrical charges. Many of these components such as some types of LEDS, computer chips, circuit boards etc. can be damaged beyond repair by an electrical discharge as low as 20 volts.
EMC (Electromagnetic Compatibility) is the capability of equipments or systems to be used in their intended environment within designed efficiency levels without causing or receiving degradation due to unintentional EMI (Electrostatic Interference. (more…)