Random high voltage eBay "thing"
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- Опубликовано: 25 фев 2021
- eBay is full of weird and random industrial modules. I saw this one, and since I couldn't find any data about it at all, I decided to buy one and reverse engineer it.
Even after working out what it does, I'm not sure of the exact application. I think it may be intended as part of a sterilisation system for rooms, where a limit switch on the door breaks power to the circuit, and it has to be reset manually upon leaving the room.
The relay circuit is particularly special for its use of a cheap, small and rugged component in place of a traditional hot-running mains voltage component.
The high voltage circuit is using a VERY non-standard approach to minimise components.
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 RUclips's advertising algorithms allowing it to be a bit more dangerous and naughty. 
Наука
"I've explained this many times before but it's worth mentioning again" - this is one of the things I like about this channel, you always explain things, assuming that people haven't seen your previous videos. keep up the good work
Yeah when I first started watching I learned so much from those explanations and now it's sort of a game where I try to see if I know the explanation before he says it. And if I'm not in the mood to hear the explanation I can just skip forward to the rest of the content.
@@VTF5252If I think I know what he's going to say, I watch anyway lol
Every video is a gateway drug, good man!
this guy is a genious. We his subscribers love him , he ain´t heavy , he´s our brother.
I quickly learned to assume that its someone's first time with that explanation,m so it's worth doing it again. It also acts as a quick refresher for veterans of my videos.
For one second i thought they somehow managed to use a bit of meshed garden hose
It's meshed for her protection. Oh wait, wrong video..............
I was thinking of a stent...shows my age, I suppose...😉
Dammit, how am I going to get a patent now? You just had to open your big mouth.
May Cornish Pixies infest your garden!
I'm not sure if that qualifies as a curse necessarily? but you definitely don't want them in the house or anywhere near your tool-kit....where's the 5mm drill bit? bast'd pixies, I can hear them laughing silently! (in answer to your question, no, I don't get out a lot, I am the patron Saint of Lost Virtue, living proof that it is indeed possible to find your virginity again?)
On a complete tangent, if you are ever 'stuck' to drill stainless steel and the pixies have made off with the exact drill bit you needed? A masonry bit might get you out of trouble, no it won't be exact but it will be effective.
Pax vobis (lockdown? what's that?)
Piskies
Me too. I'm really curious what thar wired garden hose do.
Let me translate.
Electronic Ozone Generator
Model : HT-238-C (4 wires)
Voltage : 220V/50Hz
Guangdong Hotor Electrical Appliance Co.,Ltd.
(right hand side vertical wording) Pass Certificate
Selling price in China is around 1-2 Pound
Normally used in : Disinfection cabinet, e.g. Chopsticks or cooking utensils in kitchen.
@@user-zz4to5kq1q Thank you! Much appreciated 😀
I would think of it as more of an odor elliminator and air born anti fungle device but a device to protect against mold and mildew growth formation on bamboo utensils mskes a lot of sence.. Pretty ingenious.
Thanks for the information! :)
Of course it passed! It's Chinese.
I picture someone in China just taking the piss and creating gadgets to put on eBay that have no useful purpose whatsoever, just to troll Clive.
nah they've been doing this for decades. they make money off of filling warehouses with useless junk somehow. probably something to do with "drop shipping" and "multi level marketing."
Well, it keeps me happy!
*Petrochemical pharmaceutics looks nervously around*
An ozone generator is a device designed to produce the gas ozone. Ozone is used effectively in water purification, but ozone in air must reach high levels to remove air pollutants. Health experts warn that it is important to control conditions to ensure that no person or pet becomes exposed to high levels of ozone
@@helly11811 um what ? also maybe use reply it tags who your talking to.
ozone generators being used to kill viruses: "I used the corona to destroy the corona"
This can't kill Corona virus this is a con. I had a similar unit a few years ago but that gave a higher grade of ozone .... 5gram was my one.
It charges air so the electrons of oxygen continually electrostatically connect together to make superoxide (o3 and above)
It does not kill anything more than lemon juice and oxygen or other basics elements do. Waste of money!!
It damages lungs and plastics it's not meant for indoors and basically avoid these things they are shit.
@@ravenlunatic7822 It's not a con, ozone generators are used commercially to disinfect air for fungus, bacteria and viruses. Obviously it's not good for people to breathe in any significant concentration however.
Ozone and UVC has been used in sterilization purposes for years, just don't look or breathe it in...
@@tristan6509 don't forget the gamma radiation all your fruits and vegetables are gamma radiated
Considering the 5G mention, and "electrons of oxygen", methinks Raven Lunatic is trolling us.
Waft of ozone and a light show, it's hard not to like this gadget.
All for the low low price of ONE Watt!
It is a really sexy little circuit. On one hand it can be looked at as cheap as possible, but on the other hand every single component is thoughtfully chosen. Their is beauty in simplicity
Dad's last words. Remember them well. That and the smell...
It looks like a high power strobe ligh
@@Spentelectrons sometimes the cheapemified circuits are beautiful.
I can only imagine the immeasurable amount of radio interference such a thing produces.
I bet radio amateurs within a kilometer radius are turning off their now unusable transceivers and shortwave radio listeners are doing the same.
FAA would love to say something about this thing.
It'll never pass CE certification. Sorry CA now following Brexit ! We must have our sovereignty !
Yeah.. I reckon an ancillary usage might be to stop people cheating during pub quizzes, by spamming out any radio comms within a hundred yards!
At what point does the FCC knock on your door?
@@ghost_ship_supreme only after the Ham radio guys track you down and file a complaint or a commercial radio tech finds you and files a complaint.
Source: I'm a two way radio tech
"Using this thyristor is the most unusual way I've ever seen"
Means a lot coming from Big Clive. He's been doing this for so long I thought he's seen everything.
There is a whole industry where the Chinese throw in redundant parts, just to confuse Clive...
Always something new to learn each day, you just have to seek it out more once you’ve learned most of the basics.
Clive is literally like an electrician wizard for me.
In my house that is sexy bedroom talk.
@@Peter_A1466' Reverse Engineering' at it's finest.
Ooooh! Pretty sparks. Plus you always have that reassuring buzz to let you know it's working in case you can't smell the ozone. I want one!
"No-volt relay" is a new term for me. Thanks!
Yes that is a thing but in this case the way it was stated is could be a bit confusing for some!
In this case I believe what is happening is it's a a latching relay setup?
That would drop out if power should be interrupted and keep from reactivating device until when is reset by an external switch or contact.
There are others that would just provide a contact closure should power fail to indicate possibly alarm or malfunction as well some self restoring upon power resumption and others watching and referring manual reset or reset through other means.
It means it’s there is no voltage or current on the contacts. Sometimes called “dry “ contacts
@@jeffc6167 Definitely *not* dry contacts. Dry contacts are not connected to anything. These contacts are connected to line voltage.
That looks really nice with the lights off !!
That's what she said...
The HOPI ? Or the vacuum tube ?
I've seen these things inside fridges to keep the food fresh. This is probably why the electronics are embedded in the resin.
does that work?
@@moos5221: I bought an ozone deodoriser for my fridge several months ago (USB rechargeable power cell) it actually does seem to have made a difference to both odour, and preservation!
An extra challenge to the puzzle pushes the value of your videos even further up. Good job, thank you so much!
I love how your prints/photos always look so real. Surprised you don't just superimpose them with editing but still cool that you blow them up like that
This lets me draw on them.
Wouldn't it be cool if there was an app that let you take notes, draw diagrams and symbols, and perform mathematical equations, and save it for later all in one? Straight from the noggin to the screen, it's genius. Somebody should have invented this by now.. I bet it's an advanced ancient technology. I think it's called.... pen and paper.
@@bigclivedotcom what the heck kind of incredible printer are you using?
@@hanspecans I use an Epson ecotank bulk ink printer.
I was EE briefly in '91 before my MD career and I'm loving these videos! Blast from the past and I love the puzzle solving aspects. Thanks for making them and I hope your unique channel grows!
I showed my girlfriend the closeup of it powered on and she said it looked like every black metal band logo ever. Laughed too hard. I thought it good enough to share, so I hope someone else gets a chuckle as well.
Random Black Metal Band Name Generator!
The general case of black metal band logos.
@@alexhb12333 WIRED THYRISTOR! Album Name: Corona Discharge
WIRED THYRISTOR! Album Name: Corona Discharge
Sounds like one of the many features of our fancy air filter we bought a few years ago. One of its optional functions is an ozone generator, and it sounds like that. Also, the smell was enough to convince us to leave it off.
"If it's stupid but it works it's not stupid." Doesn't mean it's not terribly dangerous or short of life! 😆
hrm. in what sense, you mean because of electrocution/fire hazard? The amount of ozone it's going to generate isn't actually that harmful. Most of it will react by basically instantly with anything that can be oxidized at all; pretty sure you could keep it running in your bedroom without the ozone harming you at all. not that I'd recommend it, the sound is obnoxious - but the lightshow is sweet!
I was more talking in general, @@covodex516. Run hardware too hard or in unconventional ways is going to destroy it faster than creating a slightly more complex but fit-for-purpose implementation. This device is pretty benign, you're right. :)
I agree with you Bro but it very work
is this more efficient and cost less than uv lightbulbs? My profession, put me at high risk to getting the covid.
I did very well. Considering, I knew I was in contact with the infected, every day. I had two powerful uv lights in a small room. I would turn it on and breathe in the ozone for a couple minutes, followed by taking a shower. Eventually, I got a low viral load of covid from a friend. I lasted 12 months, before the “friend” decided to be a fool. The covid, only lasted three days. not a problem... Except, no work for 2 weeks. Stupid World we live in.
@@user-vl9xs5dl7q What...? No. If the ozone concentration were high enough to be effective in destroying virions, it would also be harmful to you. and UV-lights do not produce ozone in any significant amounts, at least not the commercially available ones.
If you're actually being serious and sat yourself under running UV-lights, then congrats, you harmed yourself way more than Covid-19 probably would have. Spending time in a room with an uncovered UV-light will cause blindness and skin cancer in the long run. There's a reason it's effective in destroying microorganisms and even virions; and it's the same destructive power it has on human cells.
And neither UV-light nor ozone will destroy virions in your body, by the way.
But yeah, you said it...stupid world we live in, lmao...
I have nothing but respect for this man. Taught me so many things. Seems like a genuine and knowledgeable person. Thank you very much for all of the content you’ve provided
I've been watching this channel for 5-6 yrs, I've been in the tv repair business for almost 40 years...
Clive is brilliant..!!
I'd concerned how close everything is to one another, now I realise why they overdid it with the resin!
They have good anti tracking slots and the gel may be because the unit appears to be a chopstick sanitiser!
I suspect the resin is to keep the ozone from corroding the leads and copper cladding.
@@bigclivedotcom Chopstick sanitiser? lol. Don't they wash the resuable ones?
@@Gin-toki you know where Corona spread ?
@@bigclivedotcom so much for scientific use 😅
Should I order the simple or complicated, complicated it is then. That's why I support this channel. Another fine video sir.
Getting flashbacks of V-GER looking for the creator when you hooked up the black and yellow. 😁
HA Ha ha! Good one!
Obviously, BigClive has a amazing nose for tracking down mysterious, inexplicable and especially nefarious Chinesium electronics. Always wonderfully presented, explained, and dissected.
I do love my random ebay things. On a somewhat related note, you are the reason I order a good chunk of random ebay things I don't need but want.
He should try and use your comment to get sponsor ship from eBay
@@gadgetsage dropsponsorshipping mode engaged.
Random eBay tat is the best thing to buy after a drink.
Unfortunately, the ones I want usually weigh 1000 pounds and are local pickup only from 2500 miles away.
@@bigclivedotcom tat? Does that mean something other than tattoo where you're at? I don't get that one
I like when you print the images instead of just editing them in
I got a friend, she's not into any electronics, or machinery, or whatever you usually do here, and I've conducted an experiment: I showed her several videos from your channel and asked what she thinks of them.
She said that your voice is very calm, and steady, and has very smooth tone, and you know how to perform really well.
At Fanny Flambeaux she laughed out loud especially…
One of the best intro to Bigclives, my favorite (and first) is the Bear & Beer one.
@@LeeNullus she believed it was a genuine review (and so did I, but I manged to read the description) until I explained it.
By the way the video you were talking about laughing out loud.
I agree so most big clothes videos are exactly meant for that only just having some fun.
I think he needs to do a playlist of the East and post it on this channel.
Same with some pop and bang videos where things didn't go right.
And also when they beat the explosion containment pie dish came into use for its intended purpose.
And also videos that well dot-dot-dot
Went well let's just say a little worse than planned.
Well at least the ones in more spectacular matter that is.
Seriously bigclive should do this hope he sees this!
Seriously!
I’m not particularly interested in messing about with electronics but I do enjoy other people doing it.
Mr Bun Bun's tragic Easter is also one of my favourites. 👍😅
I watched the whole thing- I still haven’t a clue what it does. But it was worth it just to hear Clive prattle on about it. Genius!👍😊
The schematic hurt my eyes. It is definitely a rather unique item.
Finally.... something worthwhile to watch on UT. Thanks for posting.
Oooh, that wasn't the effect I was expecting. Lightning in a tiny bottle!
I kind of want a big version. :P
Plasma ball style
the big effects are called Tesla coil
Same. I wonder what form factors that corona discharge tube comes in
I have a kitchen hood with a big gas filled ozone tube maybe like 30cm long in it. It makes scary lightnings and a loud buzzing noise.
@@atmel9077 strange
Chinese engineering is great. They manage to find I
interesting ways to cut cost and reduce the BOM part count.
You can reduce cost even further by not buying any of it :)
@@super_straight or you can reduce cost of living by not living :)
Many years ago when I was a lad, my dad suggested ozone generators could be placed in clothes dryers to help freshen and disinfect laundry. Aside from the plastic enclosure, this device seems purpose built for that application. The mains 220VAC as an electric clothes dryer, and the instantaneous start circuit relay.
Some dryers have a small UVC lamp for ozone.
I love these reverse engineering videos. Especially when it shows weird use of electronic components and circuits designs.
I love these videos mate, thank you for your casually informative style. I like to watch after work while I wait for the missus and love to learn. Godspeed!
I do not understand any of this, but there is something very satisfying about listening to someone with a really deep knowledge and understanding of a discipline explaining it.
Like a lot of other four-layer semiconductors, thyristors have a "body diode" or "parasitic diode" formed by the way the structure sits on the intrinsic silicon substrate. Normally it can cause latchup failure modes but the designers may be deliberately using it during the charge portion of the cycle. It's been a while since I studied 4 layer devices so I could be full of beans.
These are used in refrigerators to aid in retaining freshness of foods. They are sometimes only on when door is closed.
I would guess that by oxidizing the food would get spoiled earlier, doesn't it? Please elaborate, I'm very interested!
@@peterwilbrink718 Well fridge is cold to slow down little nastiness like bacteria etc? Ozone would kill them so thats gotta slow them down some more im guessing?
@@jons6125 Makes sense indeed, using ozone as an additional measure against mold and other nastiness on the food.
@@peterwilbrink718 I got one of those little triangle rechargeable ozone generators that Clive took apart and it works a treat.
Had some green chilies that were getting a slight mould fuzz but only on the stalks. Laid them out in front of the ozone generator and it killed the mould totally in a couple of hours giving me enough time to use them up.
Very effective!
@@Aengus42 Amazing, I'm suddenly in need of an ozone generator:'D
Random high voltage eBay things are a great way to start my morning.
Thank you Clive, keep safe, keep sane and keep trawling eBay for more random things.
So glad you got the 4 wire version as this would've been a lot shorterer recording. The discharging capture was impressive too. Nice tear down.
That looks really nice with the lights off !!
For one second i thought they somehow managed to use a bit of meshed garden house
Never seen a tube based O3 generator, normally I see air gap discharge methods. Very cool, thank you for sharing that Clive
A flouro tube without an inner coating and using silica glass makes tons of ozone... Mercury vapor lamp.
Dear Clive, I have absolutely no idea what you are doing but I bloody love it !!!. Absolutely fascinating channel. Dare I say it, The Best Channel EVER. Thanks for your work Clive I’m learning a lot to be honest.
Just stumbled across your entries, especially those regarding your brother and your mum... So sorry, been there myself, but so thankfully your feelings and descriptions... absolutely human, so completely described. I'm going thru this right now with my older brother, long time in hospital, now in rehab. Not allowing any contact (covid 19), sill no contact in rehab. Such an informative post of your face to face posting has inspired me to feel not alone, a shared humanity with you, and your bro that has provided me with, I feel a proverbial kick in the pants that I so much needed right now. Thank you Thank you, so many times over
( You bearded weirdo I am bearded also, so, same camp, brother) for your thoughts, tremendous fodder to think over.
Tremendous thanks,
Best regards,
TL.
Perhaps it was incorporated in a CPAP breathing hose sterilizer set up, I DK.
Thank you Clive, was very intriguing, and a very well worthwhile👍❤️
I might add that the discharge character was of a major interest to me, can't recall seeing anything quite like it, I might have to purchase one!
I love products where you have to reverse engineer them to figure out how to use them! :-D
LMAO, yes!
When Chinese sellers offer me discounts or free samples in case I make videos and reviews, I used to point them here and say there's someone who does it all the time, and does really well.
😂 True! They could easily list this as a mosquito repeller etc. 😬😂
Well how else do you expect Clive to save us during the other world alien attack?
ergo nasa..
Interesting device. Never seen before. I like how simple and still impressive it is. Explanation of how this device works is very good and clear for me. 👍🏼
I have no idea what you are explaining but I can't stop watching ... its fascinating 😮
Very good wafting technique, Clive.
Never stick your nose out to directly inhale a suspicious gas folks. Be like Big Clive and waft the gas towards your nose.
I learned that the hard way in O-Grade Chemistry when I put my nose above a bottle of concentrated ammonia solution and sniffed.
I learned that from overindulging in cheap tex-mex street food stalls, while traveling through the American southwest.
The emissions from that stuff can make your eyes water.
@@kaisersose5549 you’re referring to the gas after your intestines have finished digesting the ‘food’?
@@MikeSmith-tx2lp Works the same on both ends of processing.
Really interesting videos. Very informative; have a rudimentary understanding of logic gates, cool to see how that gets put into practice with electronic components. I'll stick to nursing, but fun to see this stuff!
You are the ultimate fountain of electronics based knowledge!! Thanks for all you do, you're a legend!!
Keep up the good work clive, love watching and learning from you.
Stranger things.
Normal people: a tv show
Me: Clive dismantling a useless piece of electronics
Wow you did a fabulous job on the PCB photos on this one. The printouts look ridiculously good, it's like you did some post-processing trickery
The whole video is terrific. You just get better and better at this ;-)
Perfect Saturday night edification, great vlog Clive.
Thanks for sharing.
I am new to this channel, but I am HOOKED. Very well taught, and thought out. I've been around high voltages all my working life, and I have never seen anything like this before. Keep up the good work, and let us see what you can come up with next. Thanks.
“Mystery Chinese Modules” is the best name for a punk band I’ve heard in a long time. 😂
What's the last one...
Purple Monkey Dishwasher
Does punk even exist any more?
Or a electronic / modular synth musician
@@PerspectiveEngineer you're to funny my gibberish statement for years has been purple monkey banjo, just letting you know to seek help also.😁
@@briansargeant1949 "Purple Monkey Dishwasher" is a classic simpsons reference. Season 6, Episode 21, Episode ID "2f19", April 16, 1995.
Reminds me ozone producers used in some small cheap laboratory refrigerators. Used to prevent cross contamination. In university settings it’s not uncommon for several teams or projects having to share equipment.
Wuhan surplus.
Bet you're right since it has a door switch.
@@gangisspawn1 What has a door switch?
@@GordieGii he said the ozoner has a door relay for on/off, and has to be manually reset. Its in the first 1-2min of video
@@gangisspawn1 He didn't say that. Between 4 and 5 minutes he said his *guess* is that the relay is a safety shutdown in case somebody opens the door of a lab it shuts everything down.
No idea how i found my way to this channel i hardly have any experience with electronics at this level but its interesting and you have earned another sub.
Wow, that was a light show! And pretty fancy that it comes with its own contactor built in.
I live in Canada, but my ancestors were Scot (cannot say which clan lest we offend). I embrace my heritage proudly, nonetheless. I was in Glasgow a few years back and found a wonderful engineering history there.
That's pretty cool actually
After seeing the sparks in the glass tube, I wander if it actually contains gas (except from the atmosphere) in vacuum. Love the sparks though. Loved (safe) high voltage since I was a kid, playing around with our old TV. Not that that was safe, but the "rules" for safety were a little different in the 60s/70s :-)
I was pondering if they might have charged it with argon.
@@bigclivedotcom Time to dust down your spectrometer Clive!
Not just any argon, but special left-chirality, gluten-free Argon straight from CERN.
@ zeodijk The safety rules are the same as the 60s and 70s you place your head between your legs and kiss your ass good bye unless Clive gives you namby pamby batteries to play with!
Nice eBay find and the explanation of the circuit is very engaging. Thank you for the video.
I just love people with knowledge...who can see things for what they are ,and not what they say they are...
To stop kids from baking themselves in a tumble dryer. Lol
No idea what you were going on about but watched the whole thing :)
Great explanation from Mr Doubtfire. Enjoyed!!
My guess is this is sterilisation module for fridge. Switch would be connected to door, turning module off when they are open.
I like how they minimised component count low and used most of available place on circuit board. There are also component markings on board. Neat.
This device would perfectly complement the fart extractor. 💩
Bingo couldn't have said it better myself!
Tiny sparks in a methane-rich environment? Absolutely! :-)
Compliment? Not complement?
It def wouldn't be EEXE certified?
I stumbled across this video and really liked it. More, I think of buying one of those gadgets. Since now I have had an instructional like I never had before! Very cool! And well explained!
After a second or two of research I now know what it is for. It is for getting chopsticks sterile. Must have been made to be installed in a drawer or so.
Thanks for that, I was wondering! :)
Brilliant the sparks in the tube look very cool.
That! Is one of the prettiest, cool looking, fascinating tubes I've ever seen! It looks like special FX from a sci-fi film but it's not! It's real!
Nice one Clive! What a find! Thank you!
You sounded excited at the beginning & you were right to be. Plus, your special "I might get a shock Yeeuuuuoouur!" noise!
What a treat of a video!
I'd love a set of xmas lights with those tubes! What a very cool looking, discharge buzzing, very clean Xmas tree that would be! 🌲⚡
I must point out that this video is evidence of an error in Wikipedia's page on Thyristors which clearly states "Thyristors have three states: .. reverse blocking... forward blocking... forward conducting". We know have demonstrated proof that "Reverse gate breakdown" is actually a 4th mode with a demonstrated application.
15:12 *Decides that should be my new wallpaper*
This looks to be the perfect night light for my very small bedroom with no ventilation! Thanks Clive!
Actually I've decided to install my unit in place of the filters on my 3M respirator, the sound is calming, and I enjoy the pleasant smell. I'll have to order another for a night light I guess.
this channel deserves more subscribers. Thanks for walking us through the rev engineering process!
Yeah I'd say that title's pretty accurate
Angry pixies in a cage, I seen 'em
Best place for pixies, the little fuc...f fellows!
Loved seeing all those sparks in the tube ⚡️
That was funny. More of this, Clive. Best channel of RUclips.
How far away can you jam a radio with it?
Electrosmog
Even though I understand electrical currents and have for many years, there's still that tiny part of me in the back of my brain that doesn't feel right about such small gauge wires being plugged into mains power. Completely understand that it's (mostly) a non-issue but it still just looks that little bit wrong.
We are so used to the external cables being able to handle the whole load of the appliance, or handle abuse, that we forget almost everything has very small gauge mains wiring inside!
Living on the edge 😆 🤣 😆
It should though, because our standards for live mains that could carry 10A or above typically mean 1 mm or more in CSA of cabling.
Man that was odd. You done really good figuring this one out brother!
Very interesting indeed.
And Clive does it again, good clear information.👍
I think that thyristor thing is pretty much a standard trick. I haven't used thyristors, but I've used Triacs which are pretty much the same thing. Triacs can be fired in FOUR different quadrants, and I'm pretty sure this is just the other one of those quadrants that will fire it.
Triac will fire in all 4 quadrants because it is bidirectional. Thyristor is only going to fire in quadrant one, and will only fire with both positive gate voltage and positive anode, and resemble a diode in all other quadrants and stay off. Running the gate into reverse breakdown will however cause damage to the thyristor itself, as the gate area is small, and will degrade from running in reverse breakdown, as it is a reverse biased emitter base junction.
Small thyristors are not rated for use with gate turn off, where you deliberately use reverse bias on the gate to starve the thyristor latching, to turn it off. You do need a different design to get the gain of the lower transistor high enough so the gate current, which will be almost the load current at it's peak, which you pull out to turn off, is enough to turn the transistor off. The gate path needs to be large enough to handle this current, and in a small device, where it only has to handle 50mA or so of drive to start it turning on, the junctions will rapidly degrade. Long term this thyristor will simply fail as short circuit gate to cathode, and stop functioning, though it probably will take a year or so to do that if use cycle is low, but only a few thousand mains cycles will degrade it.
Another diode added to allow the current flow would have prevented that.
@@SeanBZA Yeah, what you said! (I thought I knew-my-stuff) but I must put on the dunce cap and go sit in the corner.
Pax
Our shower has one of these in it. Mildew control.
I hope the version in your shower is a bit more waterproof than this looks?!
I have seen similar modules for home saunas.
@@Agent24Electronics This has no safety ratings.... a big NOPE. Way up high, have to really try to get water in it though. Runs off isolated 12VAC, but still has the same zappy glowing bulb thing. It seems to work well for such a simple thing.
Be nice to get a quiet one.
Love your content. Great video with great explanations of the item in question.
That SCR circuit is nearly identical to the ones for electric fences that you could find 25+ years ago in electronics magazines, except that you used a beefer SCR and a TV flyback transformer.
I feel like you have saved searches set up on ebay for "sterilization + ozone" :)
Odd use of the thyristor. I'd feel much better with a 1N4148 from gate to cathode. Allowing breakdown to occur normally shortens the life of a semiconductor.
No expert here but zener diodes do operate continuously in the breakdown region. There is nothing special in their manufacturing to allow that other than to tune the breakdown voltage.
@@sitechca70 Exceed the reverse breakdown voltage for the base emitter junction of a transistor and allow it to breakdown. See how long it meets specifications.
I like it. I like the pretty light show that goes on in that tube.
The close up looked like part of the great machine on Altair IV, built by the Krell.
Ive heard of 2nd hand car dealers using ozone generators being used to get rid of nicotine smells in cars that have been owned by smokers.
Actually, thanks. I might use something like this for my ashtray smelling house.
my god... its scott manley
Fun Ozonemitter. Clever design! Well done! Thank you.
Best narration of the video...” You know....to stop kids from baking themselves in tumble driers "... Had me laughing for quite anwhile! Replayed that section multiple times!
Landed on Amazon because there’s a warehouse full of these babies that didn’t pan-out. 😂
Corona discharge apparatus? Puns intended...
I get nervous when I think Clive is about to electrocute himself, but I know he can't have since the video's up. Thanks for another gem!
I found it marketed as a "disinfector water dispenser accessories". It's an ozone generator, likely intended for mounting inside a water fountain cabinet/housing.