Knowledge

An ultrasonic sensor is a sensor that converts an ultrasonic signal into other energy signals, usually electrical signals. Ultrasound is a mechanical wave with a vibration frequenc

Amplitude: A measurement of the displacement of a molecule in a medium, used to indicate the volume of sound.

In the buzzer, it mainly plays the role of protection and amplification of all components (piezoelectric passive product housing frequency and structural design and circuit frequen

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 th

It is strictly forbidden to knock arbitrarily during the use of the electric soldering iron, and when there is too much solder on the soldering iron tip, it can be wiped off with a

Working voltage: Magnetic bee bee ringer, from 1.5 to 24V, piezoelectric from 3V to 220V are feasible, but the general voltage is still recommended to have a voltage above 9V to ob

Buzzer, also known as buzzer, English BUZZER, is a miniaturized electroacoustic device, which is divided into two categories: piezoelectric and electromagnetic according to the wor

In the design of single-chip microcomputer applications, many solutions will use buzzers, most of which use buzzers to make prompts or alarms, such as button pressing, starting wor

Any crystal with a positive piezoelectric effect must also have a reverse piezoelectric effect, and materials with piezoelectric effect are called piezoelectric materials.

The ultrasonic burglar alarm detection circuit directly uses the ultrasonic reflected signal and outputs the control signal after receiving amplification processing through the rec

Beauty device is a machine that adjusts and improves the body and face according to the physiological functions of the human body, it has whitening, skin rejuvenation, freckle remo

With the development of technology, humidifiers are widely used in people's lives. Among them, the humidifier includes an atomization sheet, which oscillates after passing the puls