This is pleasingly freaky. It's a 100 year old piece of electro-medical apparatus that probably predates most electrical appliances.
This thing is NOT child safe (or even adult safe). It has exposed electrical contacts that can deliver a significant electric shock. That's just how they did stuff in that early electrical era.
It needed a few broken solder joints resoldered and an improvised replacement for the old capacitor, but still works. The circuitry is very typical of that era, with a coil and magnetically activated circuit interrupter causing pulses of current through a step up transformer. It's very similar to a violet ray or violet wand unit. The high voltage is used to create ozone by applying it across two pieces of metal mesh on either side of a tubular glass insulator. The resultant capacitively coupled charge causes a corona discharge as it breaks the air molecules apart. In the process of recombining they create ozone and many other exotic air molecules that have a sterilizing and deodorising effect as they revert back to more stable molecules.
Ozone is an essential part of natural outdoor air at very low levels to maintain a level of sterility. It is useful to generate similarly low levels indoors, but this unit produces higher levels that are not recommended for continuous inhalation. A rough rule of thumb is that if you can smell ozone there's too much. Modern low level air cleaning units tend to use a very high airflow to mix the active air molecules into the room.
I was expecting the power consumption to be quite high, but it's actually around 5W and produces a reasonable amount of ozone. I'm not sure how long it is intended to be run for continuously, with it's continually vibrating and sparking electrical contact.
The name written on the bottom of the unit looks like A-Massey or Massoy written with a stylish flourish. It could be the name of the builder or the customer it was being made for.
If you like high voltage stuff then you may find it interesting that Jeff Behary of The Electrotherapy Museum fame is currently trying to rehome the GE 3 million volt lightning lab (He's already got the parts from it). If you can spare a few dollars He would appreciate the support:-
https://www.gofundme.com/f/Saving-GE-Lightning-Laboratory
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- https://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's algorithm quirks, allowing it to be a bit more dangerous and naughty.
#ElectronicsCreators

Well, this isn't scary at all. It's a 1920s piece of electromedical apparatus that Uh claims to generate artificial. Sea Air OZO In other words, all the advantages of the Sea Air may be obtained in the home, in the officer in the sick room by the production of pure ozone from the Ultrazone portable Model A Illustrated Price Nine Pounds nine Shillings That's about 500 pounds In relative terms to the current era, Ultrasound is recommended for all chest and lung complaints: bronchitis, asthma Etc It kills the germs, purifies and revitalizes the air in the sick room. A safe home remedy and it shows Mama there, stuffing our hands into the electrical lamp holder while the children watch an anticipation.

A weep baby down there may expert later on, there's lots of places be baby can stick its fingers and get electric shock off this the standard ozone core Haymarket London 1920s 500 pounds ER Loris Studios I Wonder if they did the brochure? Anyway, you open it up I'm gonna have to fill it back for this because it is a quite a big unit. It hinges open to reveal a port in the middle and these big gold stickers that say ultrasound and uh, standard ozone cool Haymarket and then all the patent numbers of their special secret thing. If you open up further by removing the screws, it reveals some new wires that I've stuck in for test purposes. Because this thing is designed to operate a couple of voltages, let me assure you, the side of it.

A lot to move about here. There's the input socket well plug on this side and there is the polarity selection. I Thought this Twisted originally. but and you take this screw out and then you turn it round and then you put it back in.

it's plugable links 200 volt ish and 100 volt ish. AC or DC I think it certainly Works in AC I've tested it. On the other side, we have a knob, a turning knob with bare live bits down here, and a switch that breaks the circuit in a very odd way. and we've got these lovely ornate feet and the underside of it.

It's kind of doesn't look so pretty, but uh, it's clear that they've all been handmade and this one has been stamped. The serial number uh, is that 86 or 98? There's text here I'm not sure what that says is the person who made it, have they signed it? Oh, let me try and decipher that. uh, later on, that is quite odd. Anyway, let's take a look at the inside because that's the bit we're interested in and because this is not easy to illuminate with the bench lighting because it's quite deep.

I Shall add extra elimination in the start of this light. Now notice these very modern capacitors. The original Green capacitor here is printed, both stamped in the side. Uh one MF 1000 volts Ac I Think that's one microfarad.

Um, it was showing 220 Nano far not producing great results that may actually be known to dirty electrodes, but I've replaced the two One Mega Fire capacitors in series to give 470 microfire this discharge resistor across them and Equalization resistors. Now there is a coil in here. This is the main Uh interrupter coil and there is down here. you may be able to see a little metal strip down there that is the interrupter strip and it's a contact on it.
A bit like a electric vibrator, so to speak. Doesn't sound right, but you know it was from the same era. Let's face it, when you turn the knob on the side, you may see things rotating down there. You can adjust this battery percent first to touch that vibrating contact.

and the idea is that when this coil is energized, it pulls in that coil, that contact and breaks a circuit and then releases it and then energizes again. That basically vibrates, making a loud buzzing noise as you'll notice in a moment because I'm going to Power It Up that then pulses well. I'll show you the full schematic afterwards. There are actually there's two windings in this.

There's the Uh main winding and a tap. midpoint tap this one. The air means you can use it a lower voltage, but what happens is that every time the contacts open, it puts this capacitor in series with that uh, high voltage call down there and it's got a small number of turns on the outside here and then High Voltage in the middle of this dessert. Very much handmade.

This is the interesting because it's very high voltage and then when the contact closed again, it doesn't just energize this, but it shunts that circuit that had been charged up and produced a high current pulse through the Uh primary of that Transformer That then creates a high voltage between an outer metal mesh, a kind of glass material, a cylinder, and then the inner metal mesh which is connected with these initially. just keep it all away and avoid it Sparky across, but it does still spark across. Let me bring in I wonder if Babe to see the The Violet and the sort of glow of this? I'm not really sure. Let's bring in the electrical tester.

I Had fears that the high voltage spikiness may upset this little Chinese tester, but it didn't So this is good. So I'm going to buff that wire in there, stuff that wire in there, power up, but not turn it on straight away. and I've got power on and we can see the power it uses, so at the moment it's displaying about 245 volts. Let's get this wiring away from the high voltage zappy Sparky bits and I shall set the knob to about there and then turn it on.

This is going to make a lot of noise. Oh, just one in advance. It's going to make a lot of noise. It's not too bad.

Five Watts No If I wish this isn't submitting here off, Are we going to be able to see? No, we're not. We're not going to see that. Oh, that's a Shameless It was worth trying. I Thought you might see the purple blue but it is very faint.

Uh, the light's about to come back. Watch your eyes and I can smell it. It's stinking of ozone. I'm gonna turn this little bit of it so it starts arcing sparking across.
Okay, right. I'm turning off. Oh, it's absolutely honking of ozone. It works right? I Shall uh, disconnect these right? Time for that schematic app.

Has that been really loud? I hope not. There is not much I can do about that. It's a vintage piece of ancient electrical equipment. I'll put that down there and bring in that schematic and I shall Focus down onto that and then I shall lock that and zoom in so we can take a closer look at the circuitry.

It's very simple as stuff like this tended to be because, well, they it was the early days of electricity, they were still experimenting. The claim it can be powered from your your battery Bank your accumulator or by plugging into your main socket. I'm not sure if it would have been AC or DC in the sockets at that time. I think Edison and uh Westinghouse at Tesla were still having uh having their fight AC versus DC uh Edison lost uh Tesla One yeah Go Tesla Live comes in AC or DC apparently and it can switch between these two connections.

There's no one off switch over there. it's over here and it's a bit strange how they've implemented that. It's a very strange thing indeed. So the Live can switch with the link system.

A nice solid link between the 100 volt Supply or your 200 volt. Supply If you put it to 100 volts, it's 171 ohm impedance on that coil. but there's another Section 341 ohm that gives a total when set to the 200 volt setting of 512 Ohms, which is quite High Um I did measure the power factor. it's 0.28 One great Perfect.

what'd you expect? I'd be more worried about all the radio hams shaking their fists in the air and shouting about the electrical noise I just generated. So this is a vibrating contact down here and this moves backwards and forwards as indicated by these arrows against that adjustable contact. The switch isn't series of that contact, which is very strange because it means you turn it off. it still can pass AC current through the Uh capacitor and the high voltage transform.

A bit strange that I Thought they would have put the switch maybe here or there, but they didn't It was the early days of electricity. They did what they could. The person that built it was probably a man with a beard or mustache. That's just that era.

quite like that to be honest. So here's what happens when you turn it on. This contact is initially closed and current flows through this big coil through the power switch through the contact and it basically builds up a magnetic field in this iron core. And the iron core is just literally a bunch of Uh iron wire just clamped together as a big core with the wanings around it.

When it the magnetic field reaches a decent level, this contact pulls in and when it does so, it breaks the contact here and at that point the coil is de-energized but not before current flowing through has charged this capacitor via the very low impedance primary of that high voltage. Transformer When the current has Uh dropped by the magnetic field and this course dropped to a low enough level, the contact closes again and it does two things: It energizes this circuit again and starts building a magnetic field up, but also when it closes, it shunts this capacitor down to the other side of that coil, creating a short circuit and pulses all the energy stored in this capacitor through this Uh primary winding which is a very low impedance. Uh. this was just I'll put in one MF one mover because that's what it was marked one KV When it Uh does dump that, it generates a high voltage on the high number turns in, the secretary side probably has multiple layers that is a impedance are resistance of 135 ohms measured with the meter and that then applies across the dielectric separator ozone generator, which basically is the two metal meshes with the layer of what appears to be glass in between.
And because the spark can't jump great straight across, it passively couples and there. I Think there is a bit of uh resonance when this shunts out and you've got this uh capacitor being slammed along with this Uh coil here I Think it does actually oscillate. Not sure. Um, but that does result in Uh famed Sparks as the energy tries to find its way across and it could passively couples and you get that sort of purple Corona discharge.

And the process to that is that the Uh. The oxygen is O2 is formed of two mono two atoms of oxygen and it can split that apart. They can recombine as three atoms of oxygen and that's ozone. It's unstable.

It will revert back to oxygen or whatever, or neutralize things by oxidizing them. That's what creates the destabilizing effect. They were wrong though about the seaside. It turns out that the smell of the seaside was not overzone, even though it's very similar to Ozone.

It turns out it was some sort of a biomass in the sea that just creates this smell. It's probably basically Plankton fart probably. but that is it. It's quite a neat unit.

It's very attractive. The advertising is even of that era, with the mama stuffing her hand into the lamp holder there where the small children waiting anticipation have been cured of their diseases with electricity. Just connect it to your electric light or Wireless accumulator. but that is it.

The reason they were connecting to light is that's how they connected things. Back then, there were no real sockets. they just plugged everything into the lamp holder. That's the era of the electricity, but that is it.

The standard ozone. Ultrazone Vintage 100 year old medical unit.

14 thoughts on “Scary 1920’s high voltage thing loud electrical noises”
  1. Avataaar/Circle Created with python_avatars Gary Rumain says:

    "The war of the currents was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s."
    So this was made not long after that. In which case it would have been using AC.

  2. Avataaar/Circle Created with python_avatars Eric says:

    "Plankton fart" is my new favorite way of describing "sea air" scent

  3. Avataaar/Circle Created with python_avatars ryelor123 says:

    I wonder how it sounds on DC.

  4. Avataaar/Circle Created with python_avatars ryelor123 says:

    What is that kind of wood? I know its some fragile wood that all old things were made of.

  5. Avataaar/Circle Created with python_avatars marga XP says:

    Is it weird that i kinda want one?

  6. Avataaar/Circle Created with python_avatars Airton Granero says:

    It is a classic Rhumkorff coil. Before you turned on I was thinking: how can someone had this at home it will be so annoying. I bet the product was not a success. Why the thing gets energized when it is supposed to be turn off? Weird. You are right it oscillates with a dampened senoidal wave while the capacitor discharges. If the values are not correct it produces an exponential decaying wave (too much damping). Devices like that were used in Model T ignition system, very primitive transmitters and also sometimes as a noise generators to jam transmitters.

  7. Avataaar/Circle Created with python_avatars Generic Cheesewedge says:

    So, this is technically a switch mode power supply with mechanical switching

  8. Avataaar/Circle Created with python_avatars Liam says:

    While Eddision and Westinghouse were fighting, on the other side of the world, Ganz and AEG and others were building practical AC systems.

  9. Avataaar/Circle Created with python_avatars Liam says:

    In high school physics, we used such buzzing supplies to power crookes tubes and similar devices. The ran of bench supplies at ~8vdc. Surprising amount of voltage those things would throw out.

  10. Avataaar/Circle Created with python_avatars Phonotical says:

    Reaching this, I'm reminded that some old vibrator coils can also make a Jacobs ladder (if wired differently) I'll try with my own some day, if ever it gets out of storage!

  11. Avataaar/Circle Created with python_avatars Petey Grizz says:

    That’s almost as cool as the shotgun shell alarm clock.

  12. Avataaar/Circle Created with python_avatars Fuzzy Animator says:

    I'm a little late to the party here, but it looks to me like the switch is to turn the noisemaker part on and off, not the ozone generator. If you want the generator off, you unplug it.

    I have a old 50's waffle iron that uses the same "if it's plugged in it's on" philosophy.

  13. Avataaar/Circle Created with python_avatars Rob says:

    The price would have been taken as being 9 Guineas. A Guinea was 21 shillings whereas a Pound was 20 shillings. For some strange reason probably relating to the `class system` goods priced in guineas suggested that they were better class. As I recall race horses and fur coats were always valued that way although I never owned either.
    The signature was probably that of the maker who would have been on piece work.

  14. Avataaar/Circle Created with python_avatars Ron says:

    old devices from the wild west of electricity are my favorite. this one is up there with the stabby energized table cloth of death for placing down lamps to light them up with penetrating prongs in the base

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