Capacitance vs Resistive vs Piezo Touch Switches Touch switches are found in everything from smartphones and tablets to lamps and machines. The term “touch switch” refers to any type of electrical switch that requires touch to operate. Most touchscreen...
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Capacitance vs Resistive vs Piezo Touch Switches Touch switches are found in everything from smartphones and tablets to lamps and machines. The term “touch switch” refers to any type of electrical switch that requires touch to operate. Most touchscreen interfaces feature multiple touches switched embedded within the display. While all touch switches serve the same basic function, there are some subtle nuances between the different types. The three primary types of touch switches include resistive, capacitance and piezo. Capacitance A capacitance touch switch is unique in the sense that it requires just a single electrode to function. This electrode can be installed behind a non-conductive panel, including materials like wood, glass or plastic. It works by using body capacitance, meaning it detects the electrical charge produced by the human operator. Upon touching the interface, this electrical charge increases the capacitance and engages the touch switch. Resistive A resistance touch
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