Electronic – turn a Piezo Buzzer into an ultrasonic Mist Maker

piezo-buzzerpiezoelectricity

You may have been reading my questions for a project I am doing. This one is a bit off the wall – I purchased a small 'bottle-top-humidifier' off of amazon and opened it up just to take out the ultrasonic mist maker.

I've been scouring the web for a couple of hours to try to find JUST the piezo ceramic disc that generates the mist. I've come across a few articles explaining piezoelectronics and it seems that a piezo buzzer and a piezo mist maker are made up of the same materials.

Is this correct? Can I go purchase some piezo buzzers and use them to create fog? Does anyone have any literature on this?

Best Answer

Piezo transducers for creating audible sound operate in a bending mode and resonate, typically, at 2kHz to 4kHz.

Piezo tranducers used in nebulizers operate in a thickness mode and resonate, typically, at 1MHz to 2.5MHz (1.6MHz is a popular choice).

They're quite different (1000:1 in resonant frequency)- just go and buy the right thing for the job.