Teardown of new Airwick essential mist unit
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- เผยแพร่เมื่อ 27 ส.ค. 2024
- This is an interesting twist. This air aroma unit has been completely redesigned to be more compact. I was expecting the circuitry to also have been minimised, but in reality it's similar to the original version with some interesting twists.
The power supply for the chip was a bit of a mind bender. I've not see this approach taken before.
The unit will operate down to about 3V so is suited for use with rechargeable AA cells.
It's been pointed out that the parasitic diode in the MOSFET will bridge the current limited microcontroller supply to the battery voltage with a typical diode voltage drop. That means the microcontroller will only see the full 5V when the batteries are new. That voltage nudge will still potentially extend the run time on a set of batteries though.
In hindsight, the crystal will also be providing accuracy to the 8 hours on - 16 hours off timer that this unit uses.
The image on the non-track side of the PCB was reversed to aid reverse engineering, and yes their code name for the design seems to be maltesers. Candy codenames are a good way to go.
Current draw while actively atomising is:-
400mA at 3V
340mA at 3.5V
280mA at 4V
250mA at 4.5V
Standby current at 4.5V is less than 70uA
Standby current at 3.5V is less than 30uA
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
www.bigclive.co...
This also keeps the channel independent of TH-cam's advertising algorithms allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators
RB is the abbreviation for Reckitt Benckiser. RB is the company that owns the Airwick brand, along with many more household and personal care products. The company recently renamed to Reckitt. It used to be called Reckitt & Colman.
Thanks. I was all set to Google that and you saved me the trouble.
"It smashes up and down imperceivably" - you have quite the way with words, Clive, thanks for sharing your gift with the world 😁
And that's why we all love him so much. :) Clive - the poet!
.... Wonder Woman described her date with Superman that way !
So they got rid of the heating element, switched to an ultra sound dispersion method, made the unit more compact and enabled it to work on Ni-Mh batteries. Seems to me they really made a lot of progress and applied some clever solutions to upgrade a common air freshener. As Clive would say: "Impressive!"
I am much more impressed by a Carcinogen warning sign on the "fragrance" bottle.
@@NGC1433 Many vitamins are deadly poison when overdosed. Dont drink the bottle of fragrance and youll be fine.
@@drkastenbrot
Your lungs aren't immune to cancer.
Heater removed after all the fires and meltdowns I think.
@@Andy-df5fj My point is that healthy substances can be deadly and dangerous substances can be harmless depending on correct use.
Very intereting "tear down"! It is amazing how much circuitry goes in one of these things. We used to just plug a resistive heater in a wall outlet with that wick near to it. Heheh. Those were fun 'will my house burn down or not'-devices. ;)
I recently found one of those in my basement behind the freezer, must have been plugged in about 15 years ago. It was all brown and crispy and fell apart in my hand. A fire risk I never knew I had.
@@tncorgi92 that was the mouse’s central heating system 🐭
@@robert_g_fbg could be, at one time we did have a crazy moose loose aboot the hoose.
@@robert_g_fbg Once I was cleaning the coils of a fairly new modern fridge and found a Wacom Tablet nest.
Some guesswork : I wonder if the capacitor arrangement at the output is to do with controlling resonance with the inductor - piezos are capacitive but wierdly so when vibrating, so a fixed cap may make the capacitance more predictable.
May also be to avoid DC on the piezo, perhaps to avoid corrosion if the electrodes get wet.
Maybe the current sensing is to detect if there is liquid present - if activated dry it might damage the piezo.
I want to see what happens if you fill the bottle with IPA and put a candle next to it.
IsoPropyl Alcohol for those who do not know. I'm still laughing as I type this.
Chaotic good. The best kind.
I keep thinking that “IPA” is going to give you the aroma of beer, it takes me a moment to adjust the context. 😄
The Capacitor and 100 Ohm resistor basically gives the microcontroller a Voltage based on the mean current flowing through the 1 ohm Resistor. Maybe this is used to tune the frequency to the resonant point of the Piezo i.e. when the most current is flowing. Just like a Maximum power point tracker for Solar panels would do it
"IPA", Ultrasonically vaporised paraffin might be interesting, baby oil is basically an ultra refined type of paraffin.
Thank you Clive for having such integrity in regards to how you make and deliver your videos.
Add spark igniter and you got a neat conversation starter when you have company.
Replace the aroma liquid with cat urine and hide it in a random spot in your favorite bureaucrat's office.
@@tncorgi92 Hide it inside of the air conditioning ductwork with the cat pee container. Would take ages for them to finally locate that "bad little kitty". Ha! I love it! Fred
My home has one of these in the lounge room where the TV is on most of the time, now i'm glad to have seen what components the smaller nick nack (the Mark 2 version) you've shown is comprised of internally. wonderful, Clive.
I do not know why but I feel very relaxed when I hear you speak about anything. You are my David Attenborough without the animals .
Thank you Sir
Can't wait for the premium model with a second larger diameter piezo that plays a little ditty while spritzing aroma. Probably available in themed editions ("Star Wars March," "Who Wants To Live Forever," and so on).
Well, now that you've put the idea out there it will be marketed in the most annoying aroma/music combinations possible.
"That Smell" Lynyrd Skynyrd
"Smells Like Teen Spirit" Nirvana
"Kiss Me Where It Smells Funny" Bloodhound Gang
"What's That Smells Like Fish" Blind Boy Fuller
Those first two tunes go well with extra toxic liquids.
A little ditty about Jack and Diane?
I don't think they actually need an extra disc to do that. Maybe they can modulate the power like a musical tesla coil.
This has a timer too.. It runs for 8 hours at a time periodically dispensing the aroma mist, then shuts down for 16 hours. So that time keeping would asks for microprocessor than normal piezoelectric transducer. On a side note these are made in India which is not usually known for exporting mass produced consumer electronics devices..
That's nice to know. I prefer if an air freshener only runs during daytime hours anyway.
always glad that you come back after the reverse engineering act, we all learn a lot !
Been chasing a whistling noise round the house for two days, turns out shite from decorating had slowed down the vaporizer to the point it was producing a audible soundwave. Only realized what it was after remembering this video from a few weeks back, cheers clive, saved my sanity!
I just love the health hazard sign on the liquid it farts regularly in the air. Yet people are unwilling to wax.
"Yet people are unwilling to wax."
Don't blame them, that hurts.
Plus I've not much hair left on my head, I want to keep the rest of it.
dont worry about the anti-waxers, the rest of us can enjoy candles without them
@@frogz I'm not an anti-waxer, i'm just wax hesitant.
have you tried paraffin? honestly it is better and has better priorities than bees wax and soy wax for candles but blends are fine
This seems to be a scaled-down version of the electronic nebulizer found in a breathing treatment apparatus. A few decades ago, instead of a MOSFET driver, there would be either an 812-A or a 6080 low-mu power triode valve in a power oscillator configuration, with the output from the cathode(s) driving a ceramic transducer. Larger medical units today probably use a beefier MOSFET or IGBT and a higher Vdd / Vcc. In the old triode valve oscillators, the plate cap of the 812-A was grounded to the chassis, and the cathode and grid circuits were powered from a negative supply rail. These oscillated at around 800 kHz to 1 Mhz.
Agree, a lot of circuitry. I wouldn't have thought it would have been needed.
I just refilled 3 of mine at 3:00am in the morning. After I finished I was thinking to myself I wonder how these things work. I then turn on Netflix/Narcos Mexico 3rd season and pickup my phone and I see this recommendation from TH-cam. God Bless You!!
Something so humble yet beautiful in design!
>puts childproof cap on aroma unit
>names PCB after candy
DO YOU WANT ME TO EAT IT OR NOT
You sounded like you were pleasantly surprised with the board when you first saw it & also pleasantly surprised & impressed with the complexity (in a good way) of the board and the fact they had not "cheeped - out"
I was. I expected it to be a blob, crystal switch transistor and inductor/transformer.
I learn a little nugget or two every video, it is hard to describe what a service these videos have been for me as a jr firmware engineer in training.
Thanks :)
Very interesting circuit indeed. I would never guess the atomization would be done like that.
If you ignore the piezo for a second, that circuit is just a LC resonator, and when you turn OFF the NMOS it will sinusoidal oscillate forever since there is no damping (ideally). The frequency of oscillation will be the typical 1/2π√LC (where C is the equivalent capacitor of the series capacitance and maybe the piezo parallel capacitance).
The initial energy stored in the inductor will bounce back and forth between the capacitor(s) and the inductor indefinitely.
By equating the inductor & capacitor energies we can figure the maximum voltage on the capacitor (drain of NMOS):
½·L·Ⅰ² =
½·C·V² => V ~ Ⅰ·√(L/C) + 12V
Where Ⅰ is the current through the inductor when the mosfet is turned OFF (and sensed in the 1ohm resistor)**.
My guess is that the frequency of oscillation 1/2π√LC is the resonant frequency of the piezo, and so this behaves pretty much as a resistor that will consume the inductor stored energy, atomizing the liquid and dumping the oscillations in the LC circuit.
** To be precise, Ⅰ is the current going through L when, after turning OFF the mosfet, the voltage at the drain of NMOS = 12V.
If the time the switch is ON is much bigger than the oscillation frequency then Ⅰ is ~ the current through the inductor when the mosfet is turned OFF.
However I suspect that is not the case here, so a significant amount of energy stored in the inductor L comes from charging C up to 12V after the mosfet is turned OFF.
Fancy! Now they just need to make something that actually smells tolerable, and doesn't send me into respiratory distress.
I hear you!
100% this. I bought one a couple years ago... I hate all the aromas. Why can't they just have simple single scent aromas (orange, lemon, vanilla, apple cinnamon, etc).
They always seem to be strange blends "cucumber melon pine" or some other nonsense.
Interesting little gadget - we're still using the very old-tech "single power resistor in a plug" system (which have now lasted 17 years semi-continuous use). They may be extremely simple, but that simplicity also equals reliability.
Moving parts fail !piezo elements are moving ,just like your speakers in your Hi Fi .They eventually wear out .A properly made resistor in ceramic can last a lifetime !Platinum wire wound,nichrome they last a hell of a long time .
Great circuit and awesome mecanical liquid diffusion technique!!
Great video bigclive. I remember one time you tried to put kerosene or some other fuel in one of those piezoelectric atomizers but I would not sustain flame on it's own. Good times
It is impressive that these little foggers are popping up everywhere now days. I installed one in a chimney in our miniature Christmas village and I see them in misting bottles and other items.
So far, I haven't seen the Airwick units bit will start looking.
Nice video, Clive.
Oh very interesting, we just bought two of these for the house and they work quite well, now I don't have to take one of them apart :)
Happy Birthday Clive!
Congrats to your birthday. I wish many healthy years with many nice video’s to come. Like watching your channel.
In an alternate universe Airwick is the one creating smellavision. We're missing out in this episode 😁
Wonderful, as usual Clive. I do love your work even thro I don’t follow most!!
Kindest
Bob
England
Same here, but watching this stuff makes me feel like I’m clever.
@@norfolkngood244 nice one!
That's a good idea for tamper-proofing, make lots of really deep holes but only have screws in some of them. Maybe even put left handed screws in a few others.
I bought one of the original version and it was DoA... discovered that for some reason they just hadn't soldered the positive lead to the battery holder tab... the wire was tinned but there was no solder on the tab so it's not as if it had broken in transit. Easy fix but I wonder how many of them ended up being binned due to production quality issues.
Somewhere there's a small child that never got to see their 12th birthday. Chinese manufacturing being what it is.....
I bought a brand new guitar amplifier for super cheap because it didn't work. When I opened up the back panel I found the wire connector had slipped off the rear of the power entry receptacle. 2 seconds to fix and now have a great amplifier the neighbors hate 😊 Too many things get tossed these days for need of what is often an easy fix.
@@pmpwiz hear hear well said John
Between the airwick, the solder resin, and the electrocuted meat products I bet you have the worlds most unique smelling house!
Me thinks the wick saturates the top of the wick when sitting idle.
That's why you get a burst at the start, until the top of the wick is dry enough for the capillary action to kick in high gear, and what you get after the initial flood, is what the wick can pull up and provide in steady state.
Simple but clever circuit.
Very interesting design Clive, thanks for the teardown. I've just bought one of these and remembered you'd done another of your excellent reverse engineering jobs on the Glade thingy. It'd be interesting to put a 'scope on the piezo and see what's afoot 👍
Interesting teardown and schematic, this felt pretty close to a class in electronics for me, since I have not had any tuition or study in this field. Quite entertaining as well as the kind of education I could wish I had back when I was a student 30 years ago. 😄
Watching all of Clive's videos gives you a B.S. in electrical engineering
@@nyetloki B.S. means Bachelor of Science this time around, right? 😊😊
@@TrondBrgeKrokli maybe it does maybe it doesn't
@@nyetloki Ha, funny. (* chuckle *) 😁
Certainly wish I'd had teachers of Clive's calibre when I'd did my TEC (Electronics) 40 years ago. Because my college lecturers were crap. Hand out a sheat of bander-printer copied handwritten notes, spend the lesson reading it out in monotone. Some calculations for homework.
Looking at that a little closer that is a pretty ingenious way to drive a piezo.
It looks like a parallel RLC circuit that they feed with narrow current pulses at the resonant frequency. The frequency of operation is 1/sqrt(L*C) where C=Ctop*Cbot/(Ctop+Cbot) (the piezo capacitance part of Cbot). The voltage fed to the piezo is Ctop/(Ctop+Cbot) [~n] with the L and C node voltage likely going from 0 to 24. At resonance since all the L's and C's disappear the power in is what is delivered to the equivalent resistance of the piezo. It looks like when you inject current pulses that way the waveform aligns with the current turning on as the voltage at the bottom of the inductor goes through 12 volts in the negative direction.
I had a good laugh when I realized the circuit board said "Maltesers" on it. I wouldn't be surprised to learn that the engineers may have gone through a hefty supply of chocolate malted milk balls.
Looking at this thing, I was struck by how much it reminded me of my little Arduino Uno. I'd be curious to find know what design is inside that controller, as it occurs to me that they could easily have designed this around an off the shelf part like the 8051, possibly at a lower cost per chip. From a programming standpoint (a little more in my wheel house) the codebase for this device likely prints on a sheet or two of letter/A4 paper - which to me illustrates the beauty of using an MCU in a device like this. I can start to imagine how you would produce something like this with an analog circuit, but would doubtless be much more power hungry (from my own limited understanding.)
Hi Clive, It would be interesting to see the driving waveform and the response of the piezo on a scope. I can speculate all day long how the circuit might work: reverse EMF from the inductor makes the piezo go one direction and the piezo discharges into the capacitors and rings a bit with a dampening oscillation... and it might be something completely different, I always learn unexpected things watching your channel, but the O-scope would tell us the story. I don't suspect that the code in the micro is too complicated... mostly timer to sleep, (Low Power Mode) and activate the piezo monitoring the sense line... I'd expect to see a PWM driving the mosfet and looking across the sense line you'd see where the cutoff occurs, then another one across the piezo itself... that would show how much the microcontroller is doing and how much the inductor and caps are doing... Happy New Year to you and your brother Ralfy (Since you mentioned him when you saw the date on the PCB silkscreen.)
Air Wick was sold, in 1984, to British household products company Reckitt & Colman (now Reckitt Benckiser) - hence the RB initials in the two company names that appear on the base.
Very interesting. I didn't think the circuit would be that complicated to just puff some liquid into the air.
The fluff stuck to Clive's finger gave me about the most frustrating 90 seconds of my life
Yeah. That was quite annoying.
So glad it wasn't just me.
Morgelons ;)
Seems to me, every thing in electronics is a switch . Same in all electrical applications. Great video Thankyou big Clive
I remember the old-style Airwick with the bottle and the obvious wick, and that episode of The Goodies with “mystic scents” provided by one; I think it was “Kung Fu Kapers,” notorious for causing a viewer to die laughing.
Love the preview pic -- it looked like you had an exciting plasma incident.
It was really tricky getting a good picture. I really needed a large area of black backdrop and some colored lights.
Nice insides to this new one, very minimal in parts ect.
This is certainly more complicated than the classic wall-mounted heater units. A while ago there was a cheap bag of conventional "fresheners" at a thrift store and if I knew they had plain old power resistors inside I would have bought them. I don't know how useful these ultrasonic units will be in terms of components to play around with.
RB is Reckitt Benckiser, the owner of the Air Wick brand. Big but not huge household chemicals company - not SC Johnson but still big.
FYI: "RB Hygiene Home" is Reckitt Benckiser Group PLC, which owns the Air Wick brand as well a large number of other brands such as Clearasil, Lysol, Woolite, Vanish, Calgon, etc.
3:53: Maltesers is a strange codename for this product. I had always assumed they were from the US, but I don't expect people here to know anything but Whoppers in that genre. Also ironic in light of the new "don't consume this" child-proof refills.
That is really weird! What on earth could that be on there for?
Now I want Maltesers. They tried to get them out here in the US a few years ago, and I was buying them every chance I got. They seemed to have given up because I can't find them anywhere now. 😭
It’s like are kids getting dumber or something? It’s pretty sad that people got by without stuff like that back in the day, And now everything is childproof because of the lack of parenting.
Nice catch. I wonder what that is about.
Also "malteasers" is probably the strangest thing I've seen on a board, at least among consumer products.
Maybe a fan of Android operating system?
Wow this is awesome thanks for explaining this I just picked up a new version ... Kind I wanted to know how it worked You explained it in detail thanks bro
I'm remembering Colpitts (2 caps and 1 coil) - that's all I know, learnt all about them at uni and then spent 45 years in the Electronics and never used them once, I knew at the time I was only going to need it for the exams, like bl00dy Bode plots and J notation never ever used either of them .
I need about 5 of these, and a small laser light show, and then I can just sit in my bed and listen to stadium rock when I can't sleep.
The Aroma of that room would be pungent though and probably would keep you up lol
@@BLAZE13011 I wonder if it would work with water...
The mini USB humidifiers with piezo disks and wicks work with water.
they changed the bottles to look more like those essential oil bottles that new age people like
Yes they did.
Let's take it to bits, right now.
I used to work for the company that makes these, suprised you didn't get cancer from opening that up.
Yay a new video . Happy new year again Clive
I love all your videos big Clive
Good Thursday morning to you sir
I thought with the cylindrical crystal it would have some kind of daily timer function. Maybe the resonant frequency of that piezo is just that critical? Even most of the basic microcontrollers now give you a 1% or 2% accuracy internal oscillator so seems an odd choice for a cost optimised product. Think the microcontroller is a Fremont Micro Devices part but I can't find it on their website so could be something unlisted / customised.
In hindsight, it does have a daily timer function. Well spotted.
Ah makes sense, thanks!
Yeah, these do an on 8/off 16. The original model did, too.
If u need to shortcircuit the clock crystal WHILE it is creating mist u can glitch to be on forever lol, tricky but works
Happy birthday to Ralph.
A long time ago they had one called the Wisp, that took proprietary bottles. There was a Make magazine article on hacking them to drive them yourself.
I had some wisps. Not very reliable. I'm hoping to find one of them to reverse engineer it.
Isn’t the older one called the Wisp?
Look at the mitroprocessor's outputs & inputs with an o'scope when this is running. I allege processor is involved in the oscillation. At resonance, the crystal acts as an inductor.
It does seem strange to power the low voltage microcontroller off the 12V rail when active. Happy New Year Clive.
I'm leaning towards output FET drive requirements.
Yeah, it's also been pointed out that the parasitic diode in the MOSFET will potentially cap the microcontroller rail to about 0.7V above battery voltage.
I think it's to prevent brownout circuitry of the MCU to kick in and reset the show.
@Shawn Stafford Yes, though you would have to replace the control micro with something else to drive the piezo transducer.
@Shawn Stafford 9:58 the microcontroller turns the power on and off to the atomizer piezo really fast to get it to actually vibrate and throw the liquid droplets into the air. You'd need to recreate this circuit
Absolutely No idea of what the fork you’re talking about but the fact I’m watching you do this makes me feel l must be as clever as you .but the real fact is I spaced out after clicky clicks thing a few bevies has helped.
Happy New Year fellow wearily Beardy and your followers.
Regards Norfolkngood
Clive, I wonder if there isn't more wierdness.
With the sense circuit, and the capacitors around the piezo, this might allow the tuning of the piezo resonant frequency to improve the amplitude of the "mony dispensor".
Optomizing the"emptying" of the scent tank is probably a design goal!
Does the signal to the piezo line vary?
The long scent burst at startup might be used to optimize the piezo amplitude.
I'm not sure if it has any way of sensing. Most of the piezo disks have a consistent resonant frequency.
@@user-gx6jb6wc5g
Usually, crystals running in resonant circuits do run at a "fixed" frequency.. but this crystal has a varying load, and a varying supply voltage. With the voltage regulator helping with the voltage issue, then it comes down to the physics of the crystal, diaphragm, wick etc.
Thanks for all you do, including your replies... It's nice to have a place to look for something stimulating to watch.
The FMD marking on the main IC leads me to believe that it is a Fremont Micro Device microcontroller.
Clive, the irony is that the only people that can open the safety lock bottle tops, are the kids 🥸
RB is Reckitt Benckiser, the parent company that owns the Air Wick brand.
A mates Mrs had one of these that would annoyingly blast you in the face with smelly stuff when you were having a beer nearby!🤣❤️
That looks remarkably similar to a mosquito repellant device sold in Japan.
would it be good to use on a heist? the mist would reveal the lasers that are ALWAYS there to set off alarms. LOL thanks again for entertaining me late at night.
It might be OK for creating a light mist. I think I'd rather use a vape for low level controlled direction haze though.
3:36 is when fate demands that Clive reverse-engineer another circuit board for us.
I like it!
(BTW, I saw that oscillator crystal there on the component side at 3:27. But no IC. Weird...? 😄 )
1:28 As I kid, I had to open those for my parents. I could get them open easily, they could not. Which when it was where I renamed those as adult proved.
That piece of fuzz on your finger was really pissing me off lol
We have to be a constant source of hilarity and amusement for aliens. "You won't believe what they've done this time. Used their latest tech to put chemicals in the air! They've actually automated it!" - lot's of squealing and flopping of tentacles.
It's what we do best. Being human.
I knew you'd come good. Just got one of these and wondered how it works. I've got the MK2 as you called it. Tried the air Wick official video literally titled "how does it work" absolute pointless shit. Knew you'd have done a video on it 🤣
Now we all know what Ralphie is getting for his birthday!
I could give him one filled with whisky.
The crystal could be for maintaining a clock if Mark 2 has a timer like Mark 1, which is designed to go into sleep mode so it's not dispensing while you're asleep.
"When the switch on the control panel is moved from the off position to either of the 3 settings (min, med, max) the device is turned on and will run for 8 hours unless switched off.
By moving the switch to the off position during the 8 hour cycle will terminate that cycle. Once turned on again, the timer will reset and a new 8 hour cycle will begin.
Changing the intensity setting will not reset the cycle." Mark 1 FAQ
using the 12v supply for the microcontroller might be to prevent it browning out when the batteries start getting low.
I see it the other way round. The device is designed for the stable 12V supply and switches it off to conserve power. Its a very clever and cheap way to get both stable step-up power and super low standby current.
Hey Clive! Great video! I've wondered about these, they look good, but most of the scents/oils they do are very floral and just not my kind of thing. I'd like to be able to make my own liquid for these, or perhaps find something that is available in a wider choice.
Could you maybe look at doing something about refilling the bottles? Is it possible? Could I just use the france oils used in candle making for example (what would I dilute with?)? Or perhaps vape liquid?
Very interested on thoughts on this aspect, and I know you've played with similar things in the past like making sanitizers and vape liquids etc!
Came here to say just this - if I can put my own fragrances in, then I'll have one. The what and how are all I'm missing!
@@nabarnes exactly my thoughts too, can we make our own smells Clive (not those kind of smells!)
you can but i've found that the oils need to be the soapy oils for soaps, not alcohol based oils for perfumes/fragrance oils, if anyone can figure out how to get them to atomize the heavier oils please let me know! maybe some glycerin? kuumba made amber sandalwood...... took me YEARS to find this scent after getting a candle with it originally
I want one with the scent of selenium rectifier^^
A lot of electronic engineering in there to make a house smell of artificial flowery smells... :P
The RB will be for the owner of glade - Reckitt Benckiser one of these large global company’s that no ones heard of but they own loads of brands….
Glade is owned by SC Johnson. They are competitors of RB, who make Airwick.
Do you remember those horrendously dangerous sort of ornaments from the 90’s that had a little water in a miniature pond that somehow produced loads of vapour that looked like smoke and “dripped” all over the edges to look cool.
If you touched the water under the vapour at the wrong place it was very easy to get a shock.
Very much made in China 90’s style when they REALLY didn’t care about health and safety of any products they made.
I’m sure back then if you sent a schematic over they would build you an electric chair!
I believe those ornaments with the water use the same tech to achieve the mist although it produced it continuously
Not only in the 1990s. The "trend" was still alive and sparking three years ago when I was last in China.
The ultrasonic fog generators don't give you a shock. It's the modulated ultrasonic energy you feel.
@@user-gx6jb6wc5g Ah, but the one's we get over here don't have the added delight of mains (or higher?) sparks around the base, which is being washed with the foul water that drips from the "fish tank" at the base of the "magic pesant aroda disposer" (I quote from a photo of one such device in a food store window) that so obviously had a faulty mains lead.
@@user-gx6jb6wc5g I get the “no shock” mentality you have since a lot of people know it and myself as an electrician had it drilled in to me that 0.05A of current is all it takes to kill a human. I concede for an adult now you may not but I would have been 7-10 sticking my fingers in (that sounded wrong) and my friends and myself would routinely get shocks.
I also remember getting shocks with the same friend that adults around us couldn’t feel from an arcade machine- every time you held a coin to put in, you would get a DC shock till you let go and dropped it down the coin shoot.
I know I will get shot down here but as an electrician since just before my 16th birthday, I know what a shock feels like and I guarantee we were getting shocks off that fruit machine (in adulthood, I reasoned a localised earth since this was in Spain, probably neutral WAS earth).
I remember my mother (in dressed up clothes with rubber soles) not being able to feel what i along with my compatriot has been describing “like a shaking feeling inside yourself, that makes your teeth jitter”. I can remember it clear as day. That was my very first shock, by no means bad, iv had many worse no RCD single phase shocks as a young teen but it always stuck with me that DC shock feeling from the coin shoot and the same feeling from these smoke machines - total vapour salesmen! Sorry couldn’t resist.
As an adult I will always listen to my kids in these matters if I am blessed enough to have any but in my day it was “what? You can’t put money in the machine?? So I’ll just go an stop giving you money then will I??!”
I deduced that A adults have higher skin resistances and that B as I said above, my mum checked when all dressed up in rubber soles shoes- not bare wet feet like us boys reporting this.
I wonder whether the ultrasound person piezoelectric supply is not also producing the same effects since as I’m sure Clive you will be aware more than anyone, for a “wow!” Result you need to be putting in a reasonably large amount of power by means of a power brick I recall. Now if a Chinese powerbrick alone isn’t scary enough, we introduce water, children’s small fingers into said smoke producing water.
I haven’t seen them since day 1998ish - making me just turned 8 years old so I might be totally wrong but I’m sticking by my guns with this one.
Edit:- oh and I am 18th edition trained and completed my HND over 13 years ago and my modern apprenticeship around 12-13 years ago.
When the 12v supply is on, won't the internal diode of the power supply MOSFET clamp the microprocessor power to VBatt + 0.7v? Very Odd.
That's a good point. I guess it's only going to be the full 5V with fresh batteries.
that clicky thing onbly stops us old folks from opening it easy
Ahh just one more teardown and i have to go to sleep… please ?
could "vape juice" based fluid be used to refil those bottles Clive ?? (maybe a possible video trying different viscocity of fluids to home made menthol air freshner)
I've tried a few things. The liquid type and density is quite critical for the best results.
@@user-gx6jb6wc5g back when I used to vape (5 years ago) most flavour was carried by pg as it is a lot thinner than the fog producing vg and it will thin down so it could be possible to roughly find the viscocity of the original fluid with blotting paper and a dripper bottle to get a general spread size pattern you can use as a template when mixing the correct runniness of the fluid for d.i.y refils with whatever vape base flavour you required .. (this idea sounded better in my messed up nut before.) All thone best to you and your brother (you pair are better than Any double act to have exsisted anywhere inc TV. ) Have a good 2022 Clive & Ralfy.
Thanks..
Have you seen the handheld battery operated nebulizers?
I just bought a couple to replace the corded one we have and they work great.
They remind me of this thing.
Yeah they are quite slick and apparently pretty similar.
"it's a very bare circuit board"
*Bear
i think the RB refers to the owners, a british company called Reckitt Benckiser
I wish you would taking it apart so we could have seen the piazzo disc
"It smashes up and down impercievably"
Mm, same.
Why have Maltesers printed below the date on the circuit board. Sweet
I was hoping we’d get to see a demonstration of the flamethrower feature you showed in the thumbnail image?
th-cam.com/video/H16NYnHZ_s0/w-d-xo.html
@@user-gx6jb6wc5g Thank you! I was assuming that it was just the fragrance itself, such as an alcohol solvent perhaps. I see you had to put fuel oil in it to do that though.