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PZT piezoelectric ceramics are polycrystalline crystals made by sintering lead dioxide, lead zirconate, and lead titanate at a high temperature of 1200 degrees.

Electromagnetic buzzer, mainly composed of iron core, coil, magnetic ring, diaphragm, PCB assembly (PCB is passive and active, active includes oscillation circuit), shell.

The second method is to add a horn in front of the speaker unit, especially in the middle and high frequency broadcast horns, professional speakers in the dance hall.

Audible sound wave is a rare mechanical wave, which is spherical, divergent in air, and easily attenuated, affecting the transmission effect.

Piezoelectric ceramic wafers (piezoelectric ceramics) are also known as transducers, piezoelectric ceramics are ceramics with piezoelectric effects, called piezoelectric ceramics.

These are the more professional equipment for buzzer testing, and if the user uses a single buzzer, it can also be used Simpler devices instead.

There are generally two fixed methods of piezoelectric buzzer: peripheral support mode and node support mode, which are explained in detail below.

There are also some that require a high pitch and generally use piezoelectric buzzers, such as the ship's whistle, such as burglar alarms, smoke alarms and so on.

Solid-medium transducer: solid as the propagation medium of sound waves, such as non-destructive testing transducers basically belong to this category.

The function of ultrasonic transducers is to convert the input electrical power into mechanical power (that is, ultrasound) and then transfer it, while consuming a small part of...

Low ultrasonic frequency will produce noise, when the frequency is lower than 20kHz, the noise becomes very loud during ultrasonic welding. For plastic products with higher weld...

The ultrasonic rodent exterminator of more than 30 kilohertz developed in China has a good effect on rodent control.