Ultrasonics

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RickAppling

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That is what I am thinking. But that would likely mean larger droplet size. And that might just mean that it all condenses in your mouth before it can be exhaled. And I have no idea how to make such small holes.

Do you think the membrane in this case needs bigger holes to be used for PG?
 

Stoneface

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That is what I am thinking. But that would likely mean larger droplet size. And that might just mean that it all condenses in your mouth before it can be exhaled. And I have no idea how to make such small holes.
I was just thinking the same thing, based on your earlier post about not exhaling vapor and less flavoring...
BTW, where did you read about the original design? I would be interested to read that too...:thumb:
 

Bagazo

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I tried a mini-mist portable nebulizer. The tech is actually a vibrating screen. Battery life seemed good. Played around with it for a while and the 2 AA batteries where like new.

The cons are cool vapor so, probably a turn off to those who want a warm vape.

It needs very thin liquid so with little PG or VG there is little vapor exhaled so, not good for those who want to exhale a huge cloud.

Lasts for years and, lets face it, planned obsolescence is the norm.

ETA: the thing hits like a freight train since it is designed to mist .2 ml/min
 
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Stoneface

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I tried a mini-mist portable nebulizer. The tech is actually a vibrating screen. Battery life seemed good. Played around with it for a while and the 2 AA batteries where like new.

The cons are cool vapor so, probably a turn off to those who want a warm vape.

It needs very thin liquid so with little PG or VG there is little vapor exhaled so, not good for those who want to exhale a huge cloud.

Lasts for years and, lets face it, planned obsolescence is the norm.

ETA: the thing hits like a freight train since it is designed to mist .2 ml/min
Were you able to use it with ejuice??
 

RickAppling

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I disagree with your disagree. Most likely this uses the same technology as larger humidifiers. Which is no problem as it runs off the mains. The unit I have will run off of 1000mah batteries for hours. If it could be used for vaping it might be good for a day of heavy vaping.


I disagree, the specs of this personal ultrasonic humidifier say it uses 3 watts and has a mist capacity of 1.25 fl. oz. (37 ml), probably per hour.
 

RickAppling

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Very true, but my point was not that it used fewer joule/seconds(watts) but rather that power consumption is less of an issue using mains for power. A 1A current draw would drain 2 AAA alkalines with their high internal resistance rather quickly.



Actually watts are a measure of power regardless of power source. At 3 watts that humidifier will draw less than 1 amp on a 3.7v battery. That is less than just about any atomizer.
 

RickAppling

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Might not work for a number of reasons. Not flexibility enough, holes too close so the droplets just merge. But I might just be full of it. If you have a source it would be worth a try.

I remember a prank from many a decade ago. It used an ignition coil. You put a cigarette on a cookie sheet, then used the spark from the ignition coil to make hundreds of small holes. The victim would not be able to light the cigarette because they could not draw air though the tip.



Stainless steal mesh could be purchased with the proper micron sized holes.
 

RickAppling

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I probably did not express myself well. For a given battery you are. of course correct. But my point was that the flexible mesh devices run off of AAA alkalines. Alkalines work well in low current applications. They can run a clock for years. But all batteries are not created equal. Alkalines do not do well in high current draw situations. Lithiums are used in E-cigs not only because of their higher energy density, but also because of their low internal resistance they can deliver more current.

A 2 ohm atomizer on a 3.7v battery draws 1.85A and a 3 watt ultrasonic transducer would be drawing .81A, so there is no reason to think that it would drain batteries any faster.
 

Bagazo

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The original remark from Zipslack was that "battery life may be pretty lousy". Without looking at the power consumption of these things it was a bad guess. This was comparing resistance attys to ultrasonic, not different ultrasonic techs.

While the mesh tech is more efficient, I don't see why this means that the disc can't be run off of alkalines (although I don't know why anyone would want to).

3 watts is the power of the humidifier which I posted just for comparison. If it pushes 37ml using that power then there is no reason why a fraction of a watt would not be enough for vaping.
 
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