Ultrasonic fog creator

A similar device uses 48VDC at 5A to run 10 oscillator/transducers: That would be about 250 watts.

Would this be possible to diy ? There is no problem to create metal housing for all this, but am wondering how much would the parts cost ?

On the other side, what ultrasonic parts would be good to use for such project ?

GM

What do you mean by "such a project". Do you want to duplicate the eBay device exactly? Or perhaps you have some specific application in mind?

It's probably possible to build something at lower power levels. Just look for an old medical nebulizer, atomizer, or humidifier on eBay and tear it apart to produce a low level of fog. Most consume around 100 watts but will not produce the billowing clouds of fog as shown in the videos. At the 250 watt power level and price point of the eBay device, it will be difficult to replace. Also, note that the oscillator(s) are inside the transducer assembly. Keeping the transducers from shaking the electronics to death will be a challenge if you plan to build something similar.

Search for "ultrasonic atomizer" and such for examples, ideas, and schematics:

These might help:

You might want to start with just the transducers. They're cheap enough: No clue on the power level per transducer. The "specs" say it will belch 380 ml/hr. The one in the video claims 5 liters/hr. So, you'll need 5/0.38 = 13 of these to duplicate the effects shown in the video. Please note that you'll be working with 100 to 250 watts of RF at about 1.7MHz into a capacitive load. You'll be working with plenty of power and voltage. Also, keep your RF leaks out of the 160 meter (1.8

- 2.0 MHz) ham radio band.

Please remember that you have but one life to give to your profession or hobby. Good luck and do be careful.

Thank you for your answer ! Very good written and explained !

Best regards !

LOTS!!!!!!!!!!!!!!!!!!!!!

Most of that is lime (calcium carbonate, oxide, hydroxide, whatever). There are "demineralization" tablets available for humidifiers that reduce the problem. Or, you can use demineralized water.

Another fun problem is mold and bacteria, which thrive in the humidifier. The spores and bugs like to hitch a ride on the tiny droplets. As an added bonus, the mist reeked like rotting vegetables:

Way back in college daze, a few of us built a cold mist nebulizer. Ostensibly, this was for research, but really was a fun way to get instantly drunk. I would pour some alcoholic beverage into the tank and in minutes, I would be terminally intoxicated. Tiny droplets are a great way to deliver drugs which are absorbed through the lungs and then into the blood stream.

I previously owned a rental house. One group of student tenants was into using a cold mist humidifier, probably for the same reason I used one in college. The problem was that they ran it almost constantly. The result was the inside of one of the bedrooms was almost permanently at 100% humidity, resulting in a disgusting mold and mildew problem. If the indoor temperature dropped below the dew point, moisture would condense on everything. When they finally left, I had a major cleanup problem.

If you're content to use the pressure in a garden hose, do a search for "misting nozzles" on Amazon. The droplets might not be as fine as the ultrasonic one, but this solution might be cheaper.

Michael