Knowledge

Ultrasonic skin scrubber transducer for sale, frequency 24 kHz, capacitance 5000 pF, Impedance ≤300Ω, Dimension: 78*35*0.5mm.

Humidifier transducer types: air humidifier mist transducer 108 kHz to 190 kHz, piezoelectric humidifier transducer disc 1.7 MHz to 2.4 MHz.

The safety of ultrasound is a mechanical wave, it is not an electromagnetic wave, and there is no problem with electromagnetic radiation.

Safe use of passive buzzer
As we all know, a passive buzzer is an electronic buzzer, which appears in many electrical appliances.

Piezoelectric ceramics are functional ceramic materials that can mutually convert mechanical energy and electrical energy. The so-called piezoelectric effect means that when some medium is subjected to mechanical pressure, even if the pressure is as small as sound wave vibration, it will produce shape changes such as compression or elongation, causing the surface of the medium to be charged.