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Piezo vs Capacitive Switches: What\u2019s the Difference?<\/h1>\n\n\t\t<\/div>\n\t<\/div>\n\n\t
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\"Piezo<\/div>\n\t\t<\/figure>\n\t<\/div>\n\n\t
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Switches are found in nearly all electronic devices. While some of them are mechanical, though, others are touch-based. Two of the most common types of touch-based switches include piezo and capacitive. They don\u2019t feature moving parts like their mechanical counterparts. Like all touch-based switches, piezo and capacitive switches will open or close a circuit in response to physical contact with a finger or object.<\/span><\/p>\n\n\t\t<\/div>\n\t<\/div>\n\n\t

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What Is a Piezo Switch?<\/h3>\n\n\t\t<\/div>\n\t<\/div>\n\n\t
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A Piezo switch<\/a> is a type of switch that leverages the properties of a piezoelectric material to change the orientation of a circuit. Piezoelectric materials are those that store an electrical charge when exposed to pressure. When certain materials are exposed to pressure, such as the pressure of a finger, they will store an electrical charge. These materials are known as piezoelectric materials, and they are used in the construction of piezo switches as well as piezo touchscreens.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\n\t

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What Is a Capacitive Switch?<\/h3>\n\n\t\t<\/div>\n\t<\/div>\n\n\t
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A Capacitive switch<\/a>, on the other hand, is a type of switch that leverages capacitive technology to change the orientation of a circuit. Capacitive technology refers to the use of a uniform electrostatic field to detect touches. Capacitive switches will create a uniform electrostatic field while simultaneously measuring it for changes. If you touch a key on a capacitive switch with a bare finger or any conductive object, the electrostatic field will change. The capacitive switch will then respond by opening or closing the circuit.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\n\t

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Differences Between Piezo and Capacitive Switches<\/h3>\n\n\t\t<\/div>\n\t<\/div>\n\n\t
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Piezo and capacitive are both touch-based switches. They are designed to open or close a circuit. The way in which they operate, though, varies. Piezo switches are made of a piezoelectric material. When you press a key on a piezoelectric switch, it will store an electric charge while opening or closing the circuit.<\/p>\n

Capacitive switches aren\u2019t made of a piezoelectric material. You can find them in different materials. Some of them are made of glass, whereas others are made of a transparent polymer. Regardless, capacitive switches don\u2019t contain any piezoelectric materials in their construction. They are made of traditional materials, such as glass or plastic, that feature conductive traces.<\/p>\n

When turned on, capacitive switches will emit a uniform electrostatic field. They\u2019ll constantly measure this electrostatic field to determine when to open or close the circuit. Pressing a key with a bare finger will absorb some of the electrostatic field\u2019s charge. As a result, the capacitive switch will respond by opening or closing the circuit.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n\n

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