Switches are found in nearly all electronic devices. As you may know, they are used to control one or more circuits, which is the foundation on which electronic devices operate. While all switches control a circuit, they are available in different types, including piezo. What is a piezo switch exactly, and how does it work?
The Basics of Piezo Switches
A piezo switch is a type of circuit-controlling device that’s characterized by the presence of a piezoelectric material. All piezo switches feature a piezoelectric material in their construction.
Piezoelectric materials are ceramic-based materials that respond to pressure. In other words, they generate an electrical field when exposed to mechanical pressure. Touching a piezoelectric material will cause it to generate an electrical field. For piezo switches, this electrical field will be used to control a circuit.
Advantages of Piezo Switches
When compared to other switches, piezo switches offer several advantages. They are easy to use, for instance. You don’t have to forcefully press the buttons or legends on a piezo switch. All it takes is a light-pressure touch to control a piezo switch. This makes piezo switches easy to use. While other switches require strong pressure, piezo switches only require light pressure to perform key presses.
Piezo switches also last a long time. They don’t have moving parts inside of them. Therefore, they are exposed to less wear and tear than other types of switches, specifically mechanical switches. Piezo switches can often last for tens of thousands or hundreds of thousands of keypresses, making them a smart investment for commercial switching applications.
Most piezo switches are resistant to moisture. They are designed with a sealed top layer that prevents the ingress of moisture and other liquids. With this sealed top layer, there’s little or no risk of moisture damage. You can use a piezo switch in humid environments — or other environments where moisture is a problem — without worrying about it sustaining damage.
Switches require a specific type of technology to control the circuit or circuits with which they are used. Some switches use a basic mechanical method of operation. Piezo switches, conversely, use a newer and more advanced method of operation. Piezo switches are made of a special type of material that responds to pressure. Touching the button on a piezo switch will cause it to generate an electrical charge, and this electrical charge will either open or close a circuit.