Ultrasonic Mist Generation 20mm Piezo 1.7MHz, Go to buy PCB driver board for ultrasonic mist maker.
| Item | Unit | Standard | Test condition（20±5℃） |
| （Ft）Resonant Frequency | MHz | 1.70±0.05 | HP4294A |
| （R）Resonant Impedance | Ω | ≤3.0 | HP4294A |
| （C0）Static Capacitance | pF | 1500±20% | LCR at 1.0KHz/1V |
| （Kt）Electrical-mechanical coupling coefficient | ≥0.45 | HP4294A（FS3/ FS1） | |
| Quality of humidifying | ml/h | 300 | 25℃ 50%RH |
| Atomization life | Hour | 5000 | |
| Recommended Voltage | V | 12/24/38 |
Custom ultrasonic mist generation
Detail information:
Normally, if we want to get water mist, we need to heat the water to evaporate to get. Why is it able to add pure water without heating that can be instantly turned into water mist spray out? What is the connection with this sound wave, and why can’t we hear this sound wave in the human ear?
The oscillation circuit excites the atomization piece to produce oscillation, which is then sent back to the oscillation tube’s base via the coupling capacitor, causing the oscillation circuit to resonate at 1.7 MHZ. The atomization piece turns this electrical energy into mechanical energy under the influence of this strong oscillation of electrical energy, splitting the water into tiny floating particles of roughly 5 microns. Because this is 1.7MHZ higher than the human ear’s hearing range, the ultrasonic humidifier is created. The human ear can hear frequencies between 20 Hz and 20 kHz, hence the ultrasonic humidifier is created.
Here we see what coupling capacitor, resonance, or something like that, I guess a little less understanding. In fact, to put it simply, their role is to generate high-frequency voltage. Only high-frequency voltage is added to the atomization piece, to make the atomization piece of water into water mist. Because of the low frequency, the surface vibration of the atomization piece is relatively slow, there is not enough energy to break up the water into a water mist.
We can compare the atomization piece to a tire, the high-frequency voltage frequency size is compared to the size of the input gas. Only if the input gas is large (high-frequency voltage frequency) the tire can become bulged quickly. If the input gas is small (low voltage frequency), the tire will bulge slowly. Similarly, if the input high-frequency voltage is high enough, the atomizer can instantly break up the water into tiny floating particles of about 5 microns.
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