Small piezo buzzer with high sound pressureOur company’s piezoelectric amplifiers are used to sound operation confirmation sounds and warning sounds in various electronic devices such as home appliances. The SPL(sound pressure level) is proportional to the shell size of the loudspeaker. Therefore, w

Introduction of HC-SR04HC-SR04 is a very popular sensor for measuring distance. It emits ultrasonic waves at a frequency of 40KHz. The ultrasonic waves travel through the air. If there are objects or obstacles in the path, it will bounce back to the module. Taking into account the propagation time a

Ultrasonic sensors are devices that convert ultrasonic signals into other energy signals (usually electrical signals) to measure distance from the sensor to the target object. Ultrasonic wave is a mechanical wave with a vibration frequency higher than 20KHz and it has the characteristics of high fre

Working Principle of Piezo buzzerThe piezo buzzers use piezoelectric materials. Piezoelectric materials create electricity when stress is applied, and become stressed when electricity is applied.The piezo element is to stick the piezoelectric material on the metal sheet. When an alternating voltage

The working principle of traditional magnetic active buzzer is electromagnetic induction. The active buzzer has its own oscillation circuit, and the customer only needs to use DC voltage.The working principle of the IC magnetic buzzer is that the chip oscillates a square wave signal with a fixed fre

Ultrasonic sensors are sensors developed using the characteristics of ultrasound. Ultrasonic ranging sensors are sensors that convert ultrasonic signals into other energy signals (usually electrical signals). Ultrasound is a mechanical wave with a vibration frequency higher than 20kHz. It has the ch