#piezo switch

Piezo switches are simple devices that use piezo electric effects to create switches that can be used to control circuits. In this blog post, we will explain how piezo switches work and how they can be used in various applications.

What is a piezo switch?

A piezo switch is a kind of switch that uses piezo electric effect to generate circuit. When pressed, the piezo electric material inside the switch generates a small charge that completes the circuit and powers the device.

The piezo switches are commonly used in electronic devices because they are small, durable and require little power to operate. They are also often used in devices that need to be turned on and off frequently, such as computers and mobile phones.

How does a piezo switch work?

A piezo switch is a kind of switch that uses piezo electric to generate voltage when pressure is applied to the switch. Piezo electricity is an electric current generated by applying pressure to certain materials. When pressure is applied to the piezoelectric switch, it generates a voltage that can be used to activate or deactivate the circuit.

The piezo switches are used in a variety of applications, such as medical devices and game controllers. They are also used on some Musical Instruments such as electric guitars. piezo switches are usually small and compact, making them ideal for use in electronic devices.

Benefits of piezo switches

A piezo switch is a kind of switch that uses piezo electric effect to generate electric current.

piezo switches are commonly used in applications that require low-power current, such as calculators and watches.

There are many benefits to using piezo switches. For one thing, they are very reliable and last a long time. They are also small and require very little power to operate, making them ideal for portable devices.

If you're looking for a reliable and low-power switch for your next project, consider using piezo switches.

How to install piezo switches

A piezo switch is a kind of switch that uses piezo electric effect to generate voltage when pressure is applied to the switch. piezo switches are commonly used in electronic devices such as keyboards, printers and game controllers. They are also used in industrial applications, such as pressure sensors and aircraft load sensors.

Installing a piezo switch is a relatively simple process. In most cases, all you need to do is weld two wires to the switch and then connect the other end of the wire to the circuit. This is a step-by-step guide to installing piezo switches.

Weld two wires to the piezoelectric switch.

Connect the other end of the wire to your circuit.

That's it! Your piezoelectric switch is now installed and ready to go

Application of piezo switches

A piezo switch is a kind of switch that uses piezo electric to produce mechanical action.

piezo switches are commonly used in applications requiring a high degree of reliability, such as automotive and aerospace applications.

The piezo switches are available in a variety of configurations, including instantaneous, locking, and toggle. They can be used to control various functions, such as turning devices on/off, selecting modes, or changing Settings.

The piezo switches are commonly used in space-constrained applications, such as handheld devices. They are also often used in applications that require high durability, such as automotive and aerospace applications.

Button switch, two-speed switch, self-locking switch, emergency stop switch, knob switch, knife switch. Knife switches (disconnectors), vacuum circuit breakers, frame circuit breakers, molded case circuit breakers, small circuit breakers, dual power supplies, contactors, etc. are basically used to turn on and off the power supply.

How to choose electrical switch

1. On the premise of meeting the rated current of the circuit, use the short-circuit current peak of the circuit to verify the dynamic stability of the switch, and use the short-circuit current of the circuit to verify that the switch is thermally stable. Switches that meet the requirements can be used on this circuit.

Step1: Turn off the power. Before replacing the socket, you need to cut off the power supply of the socket, and choose a new socket with the same type as the socket to be replaced (grounded or ungrounded) with a rated current of 20 amps.

Step2: Disassembly. Use a screwdriver to remove the screws on the socket and remove the cover. If the cover is not easy to remove, you can use a blade to remove the paint from the edge of the cover and carefully pry up the cover. Then remove the screws fixing the wire box and take out the socket from the wire box. Loosen the screws holding the wires and carefully remove the wires.

Step3: Wiring. Connect the new socket to the wire and fix it with screws. Generally, the neutral line (blue) is connected to the N position, the live line (yellow / red) is connected to the L position, and the ground wire (yellow and green) is connected to the E position. After connecting, tighten the screws.

Step4: Install. Carefully fold the socket and wires into the wire box, press into the junction box, tighten the screws that secure the wire box, and pay attention to frequently check whether the wire box is stable during installation. Finally, fix the cover with screws and turn on the power.

Lightly touch the switch, and lightly press the switch button to turn on the switch. When you release your hand, the switch is turned off. The internal structure is realized by the force of the metal spring. "The reasons for bad sockets are generally in two cases, one is the poor socket socket contact, and the other is the virtual connection of the power cord behind the socket panel." Master Zhang said that for the poor socket socket connection, only a new socket can be replaced. For the virtual connection of the power cord, it can be repaired.

step

Step 1: Remove the socket panel with a screwdriver; Step 2: Unscrew the screws on both sides of the socket with a screwdriver; Step 3: If it is a virtual connection of the power cord, you can tighten the screws of the terminal; if you are replacing with a new socket, you can screw the screw on the terminal to the loosest position, and connect the neutral, live, and ground wires to the terminal. in. The terminal marked with the letter L is connected to the live wire, the terminal marked with the letter N is connected to the zero wire, and the other terminal is connected to the two-color ground wire. Remember not to hurt the core.

Step 4: Install the socket in a fixed position and screw on the left and right screws; Step 5: Before closing the socket panel, you can push the air switch away for testing. Step 6: If it can be used normally, you can install the socket panel.

If you have ever had to research switches or even select a switch for a piece of electronic equipment, the number of switch technologies available on the market today might be a little overwhelming. This blog post will focus on two switches that look very similar but function according to completely different electronic principles. The question is: just what is the difference between a piezo switch and a capacitive touch switch?

First, let us examine some of the aspects that the two have in common.

Both types of switches are usually comprised of flat, metallic discs, sometimes surrounded by an illuminated ring that lights up when the switch is activated.

Typically they are installed flush with the control panel, and with no moving parts they are often highly wear-resistant, dustproof, waterproof and suitable for repetitive operation. The durability of these switches means they can withstand millions of actuations and require little to no maintenance.

Piezo switches

A piezo is a small disc comprised of two layers; an inner ceramic layer and an outer layer usually made from a metallic substance. It reacts to the force of being touched and generates an electric charge, which effectively sends a signal that the button has been pushed.

A piezo switch relies on mechanical displacement or bending of piezo ceramic – also known as the piezoelectric effect. The word piezo is derived from the Greek piezein, which means to squeeze or press. While there are no mechanical moving parts within the switch, it does require sufficient pressure to be applied in order to deflect the ceramic layer within.

Capacitive switches

On the other hand, a capacitive switch, also known as a capacitance switch, requires just one electrode, which can be placed behind a non-conductive panel. The switch uses body capacitance, making use of the electrical charge naturally carried by the human body. The difference between the device itself and the fingertip is sensed, thereby triggering the switch.

How to choose between the two:

A piezo switch senses touch force or relies on a small force, while capacitive switches require a charge or electrode, typically generated from human touch. So for devices that are meant to react only to human touch, then the capacitive touch switch is ideal for this purpose.

Capacitive switches are used in a wide selection of applications, from medical and laboratory equipment and food processing machinery to consumer applications such as appliances, vending machines and lift controls.

Pricewise, capacitive switches are typically cheaper than piezo switches from a raw materials perspective.

A user wearing thick gloves cannot operate a capacitive switch. They do however work with thin surgical gloves or specially designed conductive fibre gloves that will allow a charge to be passed from the hand to the switch. This is where the piezo switch truly comes into its own – these switches will function regardless of the type of glove the user is wearing as the switch depends on pressure to operate, not human touch.

The LANGIR® technology is based on a single VPM (Versatile Piezo Module) mechanically assembled without the use of adhesives nor soldering. The VPM is encapsulated in a metal, one piece construction housing, custom designed or as per industry standard, creating the most reliable and durable switch and keypad. The LANGIR® product line spans from single switches via a variety of keypads and control panels to full size keyboards. Virtually indestructible the LANGIR product line is rugged, sealed, tamper and vandal proof, with metal housing and solid state electronics featuring unprecedented durability and reliability.

piezo switch

LANGIR Piezo Technology Applications

We manufacture over 4000 custom made products covering a full spectrum of applications: Food Processing • Petroleum Dispensing • Clean Room Interfaces • Internet Kiosks • Access Control • Fluid Dispensing • Mining Equipment • Emergency Call Systems • Dairy Equipment • High-End White Appliances • Oceanographic Instruments • Elevators • Conveyers • Car wash • Weighing Devices • Military applications and many more.

How a piezo switch working? 

Finger pressure is applied to the surface of the switch-housing which deflects about 2 microns.