Excellently awful eBay trash (with schematic)
ฝัง
- เผยแพร่เมื่อ 7 ส.ค. 2021
- I'll make a wild guess that this product was pushed out fast to cash in on the pandemic. It's an extraordinary combination of a very robust and attractive case ruined by what's inside.
I'll probably keep the case, fan, module and even the LED panel as an amusing novelty.
That's about all I can say about this. It's literally left me speechless.
I did manage to fix it after the video had been made. I added a 220uF capacitor across the 100uF one and it made it stable.
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.com/coffee.htm
This also keeps the channel independent of TH-cam's advertising algorithms allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators - วิทยาศาสตร์และเทคโนโลยี
Oh Clive! You made me yell at my monitor! It is NOT some "glitch" coming through the MCU's power supply! It is not "odd." I knew exactly what the issue was as soon as I saw you bust open the unit, when no large capacitors were in evidence. I knew right away that the problem was that potted module hiding a large (100uF?) capacitor. You rightly identified the problem as an inrush current. Where you went wrong was failing to reduce it.
In my storied EE career (ha!), I saw this inrush issue innumerable times. Some young EE would put a FET between the source and load, then hit the FET gate hard producing a nasty dV/dt voltage on the FET's drain. If there was some large-valued capacitor on the drain, it meant that a nasty inrush current would result: I(inrush) = C*dV/dt, easily reaching 10-20 amps, or more, if the power supply can supply it. If the supply cannot, as your various USB supplies cannot (due to their internal 5V switchers' current limits), then the output of the supply will collapse to zero. This is exactly what you have here.
The faster the edge, the larger the inrush current. What you want is to slow down that dV/dt on the FET drain pin, and IT IS EXTREMELY EASY TO DO with the circuity you have shown. All that is needed is to append a small capacitor across the NFET's G-D terminals. In conjunction with the 1k resistor driving the gate, these two components create an integrator out of the NFET, much like an opamp's integrator that uses an RC network to define the ramp output it produces. This capacitor is usually called a "Miller capacitor." (Long ago, Mr. Miller must have discovered the integrator and got a capacitor named after himself.)
An opamp-based integrator uses the opamp as the heart of the circuit. Due to negative feedback, the opamp will do everything it can to hold its negative input to ground, a "virtual ground," the same potential that is applied to the opamp + pin. To this node, you add the junction of the RC series circuit. The other end of the resistor goes to a DC voltage, which establishes a constant current through the resistor; the other end of the capacitor goes to the opamp's output. This forces the resistor's constant current to pass through the capacitor, resulting in the opamp producing a linear voltage ramp. That's how an integrator works.
Now think about the NFET in this "ionizer." 15:06 When the NFET is turned on through the 1k resistor, the NFET is acting as an inverting amplifier whose output (the drain voltage) is 180 degrees out of phase with the input, the gate. The gate voltage goes low-to-high, the drain goes high-to-low. The NFET has some gain in its linear region. Not a LOT Of gain, but an appreciable gain, maybe around 50. You can model this as an inverting opamp once the gate reaches the turn-on voltage of the FET (Vth). If you then add a capacitor across the FET's G-D terminals, you now have an integrator. The difference is that the gate will NOT be held at ground voltage, but will be held (briefly) at Vth as the FET starts acting like an integrator when the FET hits its linear mode. The ramp current is (Vdd-Vth), where Vdd is the supply voltage of the MCU, and applied to the 1k resistor. This current passes through the added Miller capacitor. Since i = C*dV/dt, then dV/dt = i/c. Substituting for i, you get dV/dT = (Vdd-Vth)/(RC). Instant integrator! If you put an oscilloscope on the gate during the ramp time, you will see the FET's gate voltage "paused" at near Vth while the FET briefly operates in its linear mode before going into full saturation, after which the gate voltage will drift up to Vdd. Science!
EDIT: To finish the exercise, let's say you want to limit the inrush current to 1A, that the capacitor inside the potted module is 100uF, and that the FET's threshold voltage (Vth) is 1V. You now have all the pieces in place to make the calculation: 1A = 100uF*(5V-1V)÷(1kΩ*C). Solving for C, you get C=0.4uF. That's a little too big, so I would change out the 1k/9.1k resistors to 4.7k/100k. Now you get C of around 0.1uF, which is a common junk box value you're likely to have on hand. This should result in a dV/dT on the FET's drain of about (5-1)÷(4.7k*0.1uF) = 8.5V/mS, and a surge current of about 0.85A. Without this change, I'm guessing the board as-is has a dV/dT about 500 times larger, so the inrush current wants to be about 400A! You see why your USB bricks are collapsing. Your external supply (1:53) probably has a large value output filter capacitor on it, which helps mitigate the problem. Although that USB monitor you have in series may also affect the surge current in unknown ways.
It's not a perfect ramp, but you'd be surprised at how linear it is at the drain is and more importantly, how well-defined it is by the equation above. By fiddling with the values of R and C, you can slow down the rise time of the FET drain to significantly reduce the inrush current to the ionizer module (or any other capacitance on the drain), which must have a large input cap buried inside its potting.
Try it: add a 100nF capacitor across the G-D of the FET and change the two gate resistors to 4.7k/100k. It should fix the inrush problem. Lesson learned: inrush currents can be huge and lead to power supplies buckling due to those surges, but it's very easy to fix.
Sorry to ramble, but I think fledgling engineers should learn this stuff.
Excellent explanation. Thank you. Yet another problem that could be solved by my big bag of 104s.
@@KJ6EAD Thanks. Since I can't attach a .jpg schematic, I'm stuck with having to use a lot of words. The key thing is that this integrator trick actually works every time, but few know of it, or understand it. It's quite simple, actually.
That's a good point. The capacitor to deliberately give a soft MOSFET turn on is a neat idea. I've pinned your comment.
@Felix McWick Yeah, I know. But if you know a way to describe how a circuit works in one or two sentences, let me know. Too many people these days expect short explanations for everything (i.e., TLDR). You won't learn anything that way.
@@demef758 "The magical pixies dance on the wires, starting and stopping, changing directions, gathering and dispersing... and then turn into heat."
It explains it, it just doesn't say anything :B
Ooh, it’s like modern computer cases! Completely sealed with fans that can only pull air from inter dimensional planes of existence!
This is a real "hokus-pokus" product
Don't know what sort of pre-built garbage you are buying but even SFF PC's have ventilation
GN *cough* Thermaltake *cough* CES
@@wazaagbreak-head6039 All of the cases that have a glass front and no side-intake have no airflow whatsoever.
@@wazaagbreak-head6039 You must have been asleep for the last 10 years or so lol.
Q: You have a activated carbon filtet?
A: yeah.
Q: But your device is glued shut. How do the user changes the filter?
A: Don't worry, the air doesn't go trough the filter, so it won't need changing.
Q: but if the filter doesn't filter, why have a filter in the device?
A: Obviosly so we can advertise, that the product has a filtet... we ain't saying it does anything, but it does have it!
*filter *does *Obviously
Advanced life time filter! Never needs cleaning or changing!
That's what I was figuring too. Just so they could advertise that it has a filter. Though I'm not sure that little technicality would protect them from a false advertising claim. Not that those usually hurt the companies that pump this crap out very much. They're still going to make a huge profit from the false advertising, even when a lawsuit is factored-in. And they're just made-up, subsidiary brands, so loyalty isn't going to be affected.
If an air filter(n) exists in a product and no air passes through it, is it a filter(v)?
When you’re a scammer but yo mama didn’t raise no liar
Microcontroller: "Here I am, brain the size of a planet, and they ask me to switch a circuit on when a button is pressed. Call that job satisfaction? Cos I don't."
Manufacturing: "Did you run the design through QC first?"
Naaa, we'll just wait for Clive to buy one and figure out what is wrong.
QC=Query Clive
You laugh but I have worked for managers who thought that way; letting your customers do important testing. >_
@@railgap We call that Microsoft School of Quality Control.
@@railgap Early Access Devs: "Wait, people will pay for unfinished games just to beta test for us?"
I'll bet the QC dept. didn't expect to hear EVERY THING is wrong. 😂😂😂
It’s like it was designed by a neural network that hasn’t finished learning.
Same one that puts sleeving on mains plug earth pins. It's like they've seen electricity, and can copy the diagrams, but they don't have it on their planet and don't really understand how it works. How can you even put sleeving on an earth pin? Defies sense! Yet there's actually MILLIONS of the buggers out there in the world! Stupid mains plugs I mean, not Chinese people, tho them too.
It's fine for somebody not to understand electricity (at least, I'll permit it... for now), but why do those people get given jobs as electronic design engineers!?!? And then that country ends up as the world's manufacturer!!!??? Pardon the punctuation, but it really astounds me, it's mind blowing! Just HOW? Defies everything about logic, about economics, about everything!
@@greenaum it's kinda funny how they put the carbon filter on the bottom while a fan and the suction hole is in the middle... They should have flipped those as well.
I know a guy who's working on that project but it's confidential so don't tell anyone.
@@FauxFaFox On what?
@@abyssstrider2547 Isn't it just black plastic?
looked like at first a dollar store mono bluetooth speaker that fits into a minivan cup holder
That's exactly the thought I had
@liam Anderson if it doesn't have tape/cd/radio, there you go
At least its not spying on you.
@liam Anderson there isnt one, but there are *plenty* of shitty products out there that serve a need that doesnt exist :D
@liam Anderson It would also fit in the cup holder of one of those camping chairs with cup holders. It is just a convenient form factor.
The use of a barrel jack rather than a USB power port input also suggests this had a previous life as a better designed, possibly older, device.
Not really. A very standard plug on external power bricks is the 5.5x2.5mm plug. I think that's what this ionizer is using.
Or it was built from 'close enough' parts already on the shelf, junkyard electronics so to speak.
What bugs me about it is that it plugs in so far from the base. It's just asking to be snagged and knocked over or tossed across the room (accidentally).
The rectangular relief on the bottom might be an access to a 9V battery holder.
The shape of the device also reminds of a bluetooth speaker. Maybe that one didn't sell, so they repurposed the case and possibly the push-button and LEDs o_O
"Then I got a big blackweb one, nothing happening... Then I got an even bigger power supply..." Was expecting to hear "still nothing", followed by "Then I called photonicinduction to borrow his 100A supply, and it went pop"
*A M P S*
I bet it would make lots of ions when it goes pop, so that would be doing better than it does now.
𝐈 𝐏𝐎𝐏𝐏𝐄𝐃 𝐈𝐓!
It deserves to be dropped across the capacitor bank and blown to smithereens.
A MOSFET, a Micro , 4 resistors, 1 capacitor, 2 diodes and a PCB just to save on a mechanical switch? Great case for other projects!
I've seen more work for less benefit, the world of chinese manufacturing is a strange place
my take is that these factories makes lots of other items that have similar parts. Its done to normalize component s across products
How would you make it stubbornly refuse to turn on if it had a mechanical switch? I feel like being overly particular about the power supply was the whole raison d'être of that silly product.
@@takase5037 I'm convinced a lot of these products are made with overstocked parts and they just try to fit them together in some way that can be resold
@@anonony9081 your explanation makes much more sense
You know you're getting good value for money when Clive says "this is rilly strenj" so many times.
This falls into the category of "Why does this exist, and what could we have made with the wasted materials?".
I think it was made _from_ wasted materials. The outside looks like a leftover speaker shell.
Clive gave this thing way more attention than the original designer did
Can't believe you didn't opt for a can opener on the bottom of that case, it's the perfect shape for one!!!
"The itsy bitsy spider came up the water spout...out came the gun and wiped the ducker out." I would have chosen a ferric-ready hacksaw blade....
What a treat especiall!
Your next video should start out “gentleman! Welcome back to the shop! Today, a treat especiall....”
AvE style
Wait, wuuuuut? Two of my favorite channels? I can die happy now.
This video needs more brake cleaner.
Just the wrong type of treat.
Drills into case: "Hope there's not a big lithium battery inside...." Classic Big Clive. Grabs popcorn. 👍
Part of me was hoping for a big lithium cell, so that Clive could utilise his Explosion Containment Pie Dish.
Since the module is a capacitive load you need to make the MOSFET switch slowly. That could be achieved by a capacitor parallel to the 10K resistor that connects the gate to ground. MOSFETs are so fast that they glitch the power supply like hell when they got a capacitive load. Problems I faced for the better part of 25 years as an electronics engineer.
That's the common way a lot of my engineering pals did it, but I always challenged them to write the equation for how it works. They never could. That's why you make the FET into an integrator (capacitor across the G-D) instead. It leads to a very predictable slew rate on the drain, regardless of the load.
@@demef758 Thanks for that (and your pinned comment). As a non-profesional enthusiast, there are gaps in my knowledge and 'intuition'. I can use what you've written to directly improve my own designs, and I've expanded my knowledge. For this, I thank you muchly!
@@demef758 Yes that works as well and has usually a more linear switching curve as the gate-to-gnd approach. I have done both with the same results -> No glitches.
@@ChipGuy Provide the equation you used to get your desired slew rate for a cap between gate-source. That's all I'm pointing out: predictable results, very important for a mass-produced product. The gate-to-drain cap gives you that. Gate-to-source? Nope.
@@demef758 Absolutely. I have used the exact same integrator network many times in designs - always with highly predictable performance. I usually add series resistance in the gate drive as well though to ensure a consistent time-constant style of network. Beautiful linear voltage ramp both up and down on the drain side.
Never underestimate the educational value of pure junk.
This is extremely true. My cousin and I learned a lot about technology from a tub of broken computer peripherals when we were kids.
I know I can’t be the only one that subscribed because his voice, inflection and cadence are so soothing to listen to, right? I found myself walking around listening, not even learning.
A lot of others seem to use my voice as ambient background sound and for sleep aid.
@@bigclivedotcom Using your voice as a sleep aid sounds like a compliment and a slap in the face at the same time :))) Thanks for your videos, keep up the great work!
He has a pleasant voice, and accent. 🤘✅⚡️
I like it when the bomb disposal expert grabs his drill and says "We're going in"!
As screwed up as this thing is, they seemed to have got one thing right - It stands the right way up!
I genuinely have no idea what you are talking about once we get to the circuit board portion of the inflight entertainment but I find your videos so enjoyable that I watch every single one you post. I'm hoping I'll learn by immersion someday haha
You'll be surprised how it all goes together like a jigsaw.
You probably will. Clive's got a gift for explaining technical stuff in a manner ordinary people can get, I think. Not too over-technical but not under-technical either. Not patronising, but makes clear stuff that a layman would need telling about.
At least I think so, I know a fair bit of electronics anyway but I think a curious amateur could pick up what Clive's talking about. And electronics is all internally consistent anyway, it all goes together in a system with logical rules, so if you draw an inference from something it's usually correct. The more you learn, the easier it is to learn more. Other viewers say the same sort of things you do about his vids. Dude should have a TH-cam channel or something.
was your ancestor a gardener?
Love the tear-downs of equipment designed by clueless engineers!
It´s chinese... It remotely looks like the real deal, so let´s rip off the rest of the world.
I've seen some shockers of design, some design faults by incompetent engineers, and a couple of pure rip offs. The best one was a device advertised on the tele to repel vermin by transmitting pulses through your house wiring. Someone brought one into work, and all it had was apart from the simple power supply was an LED and a 555 timer to flash it. If scamwatch was around then I would have dobbed them in.
A real shame that something with such crap functionality was so well made!
"..It's just everything [with it] is wrong. It's a spectacular mess up."
(Chinese national anthem starts to play)
Absolutely, oddly I'm currecntly looking at something like this,the reality is,NON Scientific individuals are naive about such products, however, psychologically the SALES division of many CHINA BASED electronic goods are good salesmen,wrap somthing up in'scientific bullshit,charge a sufficiently high price and people will buy it.
Another great example of ‘that’s too good a price to be true!’ And cheap eBay crud from China.
Still it’s amazing how much effort has been put into some of it, and how little effort has been put into the rest of it!
A very soothing watch. 👍
chinese sellers on ebay always show air movement with leaves like there's just loose leaves in everyone's house
You mean you dont have a house full of leaves? 🤣
@@dogwalker666 They don't. I don't. You my friend are a dog walker. We know how all the leaves get in your house 😏
@@philsmith5449 she is only a little dog she doesn't bring in that many 🤣
Haven't you heard of the S.P.Q.R. Roman empire? Everything looks official with tiny leaves around it...
@@brentfisher902 good point
It was a Chinese typo - it's carbon FILLER.
about once a month, usually after 9 pm, I stumble upon one of your videos and just have to watch 10 more. This was one of them and I enjoyed every second of this 30min video of yours. cheers!
Bigclive, I love it when the conversation goes utterly over my head. I owe you and your contemporaries another cuppa!
"no... That really is crap" 😆
that was definitely weird... But cheers for the share!
Given the way I fumble with smd’s, I’m rather encouraged hearing Clive describe his own woes with the little buggers. Also, I want a shirt that says “Now where’s my spudger?”
I say, you find the most interesting "not functional" things to tear apart and tease the ways and means out. You're right, it is a very nice can, and it has possibilities, a little bit of ingenuity and it could be something functional, perhaps? You do a very fine job of dissecting and displaying all intricacies. Thanks, great show.
"one moment please",
......
"One moment please",
......
"One moment please",
.......lol. Clive you really needed a lot of moments with this one. Maybe it's time to have me edit your videos for ya.
I'm thinking of making a T-shirt with the BC logo and the text "One moment please" on the front and "Well, there you go" on the back. 😋
I love the one moments
Don't you try to take that from us...
They could use a flashlight chip to control the device, with OFF/ON, strobe and SOS modes.
Maybe that's why it only uses three of its eight pins... ;>)
Top tip: After every sentence Clive says, think "Thats what she said". I now can't stop and i'm smiling ear to ear :D
How about a drinking game where you take a shot every time Clive says 'One moment, pleaze'...?
@@kimvibk9242 we would all be smashed :)
I'm loving how Kink Palculator is now a phrase said so smoothly and calmy that I always step backwards to see how it's said.
This is the first of his vids I've watched featuring K.P. and I nearly fell off my chair 🤣
@@philsmith5449 Hahahaha you're late to the party, but you're welcome to it!
@@philsmith5449 Watch how smoothly he can now say it!
That is the best title I have ever seen on a TH-cam video and of course Clive is the one that did it!😂 Excellently awful EBay Trash and the “with schematic” part was my favourite!
Absolutely! Ambling through his videos, 'Excellently awful EBay Trash'? Fist slam, pointing finger, "I'm in!"
5:00 that is some cargo cult engineering right there!
i just discovered what 'cargo cult engineering' is and I fucking lost so much hope in humanity. It's the dunning kruger effect on steroids. Humans really are just freaks who think they can just copy what they see and get riches and bitches, huh.
Reminds me vaguely of a science fiction story I once read - I can't remember any details, but an alien spacecraft (I think) was involved. When our intrepid explorers got in, they found that things looked fine, but nothing worked. They took stuff to bits to find that the insides of everything were just made of solid grey gunk. Our aliens had created equipment purely from images of the externals with no attempt to make any actual working parts. (And no, I'm not suggesting this thing was built by alien life forms 😆). wish I could remember where I'd seen it!
The Science Fiction & Fantasy Stack Exchange site is good at identifying stories and movies. You can post there and probably get an answer rather quickly!
Rendezvous with Rama possibly or one of the sequels?
2001: A Space Odyssey? The novel (Not the movie).
@@Kae6502 This is the story my brain threw at me on reading Tony's comment. SPOILERS:
when Bowman ends up through the monolith, so really near the end of the book.
For the real life example look up the way the cargo cults worked...they built idols of runways and aircraft control towers in the hope of summoning the godlike aeroplanes that brought them such marvelous cargo during the war that happened in the past...doing something because you think it has a correlation...it works a few times...but you get the right answer for the wrong reason...
Thanks for sharing the video! I've never come across your channel before, and really appreciated your content. These days there aren't very many TH-camrs who sound as polite and intelligent as you while narrating their videos. (I subscribed) hope you have a very merry Christmas sir.
I just discovered this channel and never knew what’s I was missing. Great content and I look forward to watching more.
Yes it is based on products that look like that but have a perforated lower half for the air to be drawn in.
Amazon is flooded with those things, and they cost $50 upwards to over $200.
Quite the rage these things, the one you opened was excellent.
All the good engineering practices in one package.
Hi Clive ,have you checked out the cheap fly and mosquito / mouse repellents , I got one from Amazon that only had a circuit to power an led , it had a piezo in it but not connected lol
Its been a long time since your vids have popped up in my feed, Wow, had lots giggles with the "One moment please ", and the rest of the one liners!. Just Brilliant!! Very cool! Lots of Love from Australia.
"I think this is gonna be... a destructive experience..." I love you so much Clive.
It's a thoughts and prayers receiver!
It could serve as a ready-made prop for a movie where they have to defuse small bombs hidden around a city or something. Reminiscent of the VX rockets from The Rock
I really enjoy your videos. I don't know much about electronics, but I really like listening to you explain things. you have a very pleasant voice, and you really help relax me when I watch your videos. cheers
Big Clive - I love your explanations. TBH I don't really understand most of it but it seems like a form of poetry! Like it!
It looks like the switch is connected to the processor end of the buffer capacitor, rather than 0v rail. That would mean it would short the buffer capacitor when pressed. Unless the power supply is able to keep up with the initial draw without a buffer capacitor: reset loop.
EDIT:
Immediately after I hit "save", you plugged the ionizer in after power up and crashed the processor. This is where my theory falls to the ground.
Loved the video.
Throughout the 2nd half of the video, I kept saying to myself. “He’s going to bring a scope out any second”. “Yep, any minute now he’ll put a scope on it.”
I’m sure Demef is right, but would a simpler solution by to put a resistor in line with the ioniser?
I enjoy it more when you try to modify it to either work or become a better piece of crap. Nice job Mr. Clive. I so enjoyed this one.
Big Clive, I've no idea what you are doing but I love watching AND listening!
Maybe put a low value resistor in line with the power to the ion module to limit startup current.
I think the LED board was actually expected to work, not just to satisfy the buyer with a shinny light.
thanks for all you do! love your videos big clive
Drinking Game: Have a shot every time Clive says 'One moment please'
From your breakdown, it appears they first built it, then designed the circuitboard in a trial and error fashion.
27:26 "Its an awful product and that makes it most excellent" So its SO bad its good.
Love the videos brother! Soothing and knowledgeable voice and funny content. Always great stuff!
Clive videos always bring me back to a simpler time when I first found his channel and started watching lol I'm not even electrically inclined, Clive is just an interesting guy!
‘Mystery item time’ - my cue to get a beer and enjoy. Thanks BigClive!
maybe sticking a resistor in series with the supply to the ioniser module might cure it??
Gulp down some cider every time Clive says “one moment please” 😀🍺😉
I like your format, especially the blown up circuit board photos for your explanations.
The MOSFET is OK, shame about everything else.
The FET is okay, it's just been misused here.
A scope would have been nice to see what is happening to the supply on startup. Maybe it's time for a RRRigol :)
The worst thing about trash like this is the "normal" consumer would never know that it isn't working at all...
But I love my alien abduction repeller.
i really like your videos. Especially the idea with the printed out circuits is very great. Thank you and greetings from germany. :)
Just saying, how about powering the ionizer module separately with bench power supply at 5 volts to see if works or is electrically shorted damaged.
Clive it's times like thees that you need to out 230 volts through it and finalise it once and for all. Photonic inductions would have that fan very fast in no time at all. Cheers
Cheers Clive.
I studied electronic engineering at college, but I'm not very good with maths, can't get my head around hex or binary.
I'm more practical.
Love to see your teardowns and hear your innuendos
Take care big guy x
You only really need hex and binary if you're programming microcontrollers in assembly code. If you ever do that, hex and binary will make a lot more sense.
5:44 right when you plugged that in, my bread maker started on it's cycle and scared the crap out of me.....
The case and fan would make for an excellent high power LED flashlight.
There's no volume control !! Why is there no volume control ?
@@hifismiffy For the fan?
@@0x8badf00d I think he meant to say "Brightness Control" Volume=ears, Brightness=eyes.
Since you solder so much, have you ever set on fire that giant unkept chin bush? lol. That said you find the weirdest stuff to teardown, and I love it.
it smells like bbq
Fascinating as always Clive!
Could I suggest that when you are doing the soldering/desoldering steps or other skill-based activities you do not cut away? It is _very_ useful to be able to see the various techniques in action in order to learn them. It really demystifies the process, especially something that has such an unhelpful and prohibitive mystique attached to it as SMT electronics. Manual skills are always the hardest to pick up in any handicraft and to see them being performed really helps. I still haven't managed the three fingered board-holding-and-solder technique but I keep trying!
I love your videos man. You’re hilarious. Keep up the great videos ❤
Is this a record for the number of times Clive says "one moment please", I haven't counted them but I think I should
There is an old rule that says you take a shot each time the phrase is uttered, so... It all comes down to how pished you get in the end?
I'm here for it
I'm going to imitate that every time I get a phone call.
Or..."And It Came To Pass(tm)" in the Book Of Mormon....
@@brentfisher902 And it came to pass
That rock 'n' roll was born
All across the land every rockin' band
Was blowin' up a storm
AC/DC, Let there be rock, 1977
And let's be honest AC/DC for Big Clive would be an appropriate band
Lots of OMPs (one moment please)today
I did miss MYE (mind your eyes)
shame we cant have everything we want.
It was a most unusual product today, Im sure if someone wanted to they could re-build the thing to work as intentened but that would be far too much faffing.
Thanks for finding this little gem.
Subscribed, I love your knowledge of things and your voice
I don't understand half of what he talks about, I'll admit it, but I enjoy the cynical humour and the soothing voice.
I am literally subscribed to you cause I find your voice and accent absolutely amazing!
Just remember: when YOU go to Scotland, it is YOU who has an accent!
Seems like the whole thing could be done with a plain on off switch.
a mechanical switch? in 2021?
Then it wouldn't be easily upgradable to IOT wearable tech!
What if you plug the ioniser directly into a supply, and measure the startup current...just to see what it is actually doing?
This is the thing to do, but will probably need something with a very high sample rate to catch it.
I remember having one of these little mini USB Hoovers (the kind that are definitely made cheaply in China) and it wouldn't run on another cheap USB power adapter which supposedly gave out 1A but ran when plugged into a computer. When plugged into the USB adapter the motor in the mini hoover would pulse, almost like the LED did here.
I doubt the motor took an Amp when running, but maybe slightly more than that to start, and the usb adapter's pulse width wasn't able to keep up with the power draw.
Problem is the ionizer is pushing against the supply with leverage on air at the -HV output. In essence it can damage the supply and the supply can cut out when it detects this.
2-output type would be preferable here. Hooking up a scope can damage scope as well due to the same pushback. And the scope IS referenced to neutral....
Thanks Clive. Looking at the schematic, at c. 15:00 - Wouldn't a capacitor between the FET Gate and Drain slow down the FET turn on, and thus reduce inrush current to the load? Gate current is low, so you can increase the values of the voltage divider resistors, maintaining the ratio, and then use a smaller capacitor value to achieve the same result. It's roughly a low gain integrator, which an op amp would be better suited for. Did you try that?
Very professional. Love this one.
I would have loved a scope to check the voltage for the ion model.
would a small non electrolytic cap across the connecter for the ion module helped?
No. All you do by that is increase the inrush current. It's this current that causes the power source to collapse because it can't supply these massive currents. Adding another cap on the power jack only exacerbates the problem.
@@demef758 ah that makes sense.
I was thinking more of noise glitching something out.
I was more or less guessing.
I've read your long post. Makes a lot of sense.
Thanks for your answer.
18:34 "Actually no fuck it" heheheh
The part when you were changing up power banks reminded me of the Pulp Fiction scene in the second hand store😀
Love the “Kink Palcutator”! 😂
Just had a horrible thought go through my mind: The Chinese also build their own nuclear power stations too!
It gets worse they have a contract to build one in southern England,
@Gazr Gazr they are completely insane, The one time I was in a Chinese built aircraft the engines wouldn't start.
@Gazr Gazr I hear the design is a copy of Chernobyl, what could possibly go wrong! ☢☢☢☢
@Gazr Gazr it was quite a relief, they transferred us to Lufthansa.
@Gazr Gazr definitely,
_"I've missed one of the dots"_ - 16:12 Nope, it's not needed. It is obvious that it connects there so it is not needed. Back when I started "dots" were only used if a line pasted over the other and was connected. Not when a line ends on the other. Much neater schematics without the excessive dots!
Almost there. One million incoming Broseph.
Ah yes, the good old PR-A7162991.
You need to spit in the holes and it plays your favorite song backwards.
I was wondering whether the floating switch input was an issue, but as others have commented I suspect the main issue is the MOSFET's rapid switch on. I would expect an internal pull-up in the micro for the switch input. I also wondered whether another reason for using a micro could be to provide a timed duration for the output in some use cases.
20:42 where did you get that flip up container, looks really neat
eBay
Bro this video is such a good youtube channel idea. Buy misleading/false advertised stuff on ebay, amazon, wish (especially wish), take it apart, and say if it's crap / how it works / why it's junk, etc. or good if it actually turns out to be good! haha
2:27 The dull, purple glow suggesting you've got yourself a nice mini Chinese Demon Core. I've been watching too much Plainly Difficult this week.
I had a few ionizers modules that were actually bad. I'm wondering after unit is just bad did you test it straight up to see if it's working and putting out ionized
As a technical person, I admire your understanding and analysis .
Would placing a diode from earth to DC+ with high reverse voltage protect against the ioniser causing isolation failure of the PSU, or with the DC turning live as a result? Assuming an earth connection was available.