Verry in depth video! Thanks so much for sharing ;-D I think I'm going to salvage the pump/compressor out of a frige tomorrow after seeing how much air comes out!
Very nice job. The best oil to use is mineral oil. You can get it from the pharmacy, or order it from the pharmacy, by the pint. Great vacuum setup! Yes! you do need to get all the air you can, out of there so to lessen the chance of inter-winding arcing, like what happened to the original transformer. What happened there is the wire got too hot and broke down the potting, then it arced between layers and burned up. Great job man! Thanks for showing us!
The name is wonderful "nomen est omen". My colleague did once in the old days (1950) an experiment with an inductor coil: He nailed a dead herring to the wall outside his home, let it season for a while and then installed the other secondary coil wire inside the herring and the other wire to a near proximity of the back of the fish. Then he placed a cup under the installation and started the inductor. Shortly there came first fly flying to the back of the herring, ZZZAPP! and flew down to the cup...
Very nice job :). If you need a higher vacuum you can put a diffusion pump after the compressor. In a high vacuum system the compressor is called a roughing pump. As I recall having a vacuum reservoir tank between the roughing pump and the diffusion pump is OK also. You may be able to pick up a diffusion pump from a surplus house or scrap recycler.
Note though that the diffusion pump require a much better roughing vacuum than is provided by that dehumidifier pump. Typically the pressure needs to be brought down to well under 1mBar on the roughing side whereas the dehumidifier pump in this video is only bringing the vacuum down to about 90mBar. With a roughing pressure that high the diffusion pump would not work at all.
Nice little HV transformer, good work. Just remember that it now can supply much more current and are much more dangerous. High frequency HV mostly goes on the surface of the body but dangerous anyway and you dont want to make a misstake. That said, it looks like a good HV transformer and one of the better DIY transformers i have seen on YT. Now, build a HV multiplier (potted or in oil) and take the voltage up to 100kV. This transformer will be an excellent driver for such a multiplier.
Wow kid, i have been trying to learn how to do this forever and its either weak stuff were you have to tap the power wire manually, or the fly through stuff on how to make the coils and i get lost. This video is THE video on how to make the best of these devices. Thank you for sharing your excellent knowledge, a massive step beyond all the others i have watched in years! So, my old 50 year old butt will be your newest subscriber today, then im making this bad boy.
More cool stuff dude. You are one of my favorite experimenters and I like your approach. I've just blown a couple flybacks with my new SS-SG hybrid Tesla coil and I need to make something more robust to use as its primary. I'll be trying your method here! I have plenty of magnet wire and bare cores. Meanwhile, check out my coil! It is starting to work pretty well now that I have the spark gap overhauled. Extreme High Voltage: TinselKoil VII Overview, Construction, Demo Extreme High Voltage: Moar Psarks from TinselKoil VII Keep up the good work!
Wow it's amazing! Yeah I've almost burnt up all of my flybacks on my ZVS driver too! They sure don't last long when you put a lot of power into them! If you make your own flyback you may need to put a rectifier on the output before you can use it with your Tesla coil. I wish I had plenty of magnet wire!!! I just have stuff I recycled! Thank you! You keep up the great work too!
I've been searching for quite a while for a simple way to make one of these! With a bit of alteration, it will meet my needs perfectly! Great video! And I'm impressed with your recycling abilities! (I do HVAC work for a living and have mineral oil and a vacuum pump, so I might have a bit more success than you did. I base that statement on your comment that it burned up.)
Try making a branch line to put the valves in paralell with a single pressure signal. You probably want them in parallel as a whole, in fact. Compound the flow.
It would work and he hadn't tried it as of this video. Trust me, pneumatic actuators work on this principle all the time. Just because someone says something won't work it doesn't make it true. He is new to working with pneumatics, he will learn, if he sticks with it.
You might try a tee fitting between the two compressors going to the jar. Each one would be doing half the work, you might get a greater vacuum in the jar. Nice slippers, I need a new pair.
Most food jars are fine with vacuum. The "canning process" gets them down to the vapor pressure of water at room temperature. What they don't do well with is pressure.
I guess i couldve ask this question to anyone with electronic diy knowledge, but i found your detail oriented dialog matter of fact, and easy to understand. Why cant you or why doesnt anyone ever use multiple spark gaps as their primary focus when multiplying power to achieve get those huge electrical discharges, over jacobs latter's, flybacks, tesla coils, ect..?
Nikola Tesla used pre-boiled linseed oil. Many of the early-1900 violet-ray companies and x-ray transformer companies used molten wax, sucked it down then let it harden: mixtures of beeswax and caranuba wax. I took apart a modern dental-xray transformer and found that it used linseed oil. When not immersed, the linseed oil hardened (like oil-based paint,) so that transformer now looks like it's embedded in orange plastic.
Be very careful about turning power on to flybacks, because I just got bit extreemly hard by the lever of a toggle switch that was only supposed to be turning on 26V to the flyback circuit!
your'e welcome. i hope it works for you....while your'e at it try this: add an airline oiler to the intake, and an air filter to the line between your first and second air pumps, get the air filter that has the automatic drain valve in the bowl, then just link the filter's drain valve outlet back to the oiler's bowl. (if you add a small filter to the oil return line, it'll act as a water trap, [oil floats on water]) this will make the scroll compressor much more effective not only by lubricating the scroll assembly, it'll reduce bleed-back within the scroll assembly. the oil i'd suggest is DOT-3 tranny fluid. the oiler and filter are the types used in automotive repair garages for things like the air-powered tools common to most if not all such establishments. as to your coil.....i'd recommend double cotton-wrapped, enamel coated wire....less chance of a inter-winding short (those'll just ruin your day!) Do have fun and be safe. l8er!....;)
Perhaps you could remove the check valve from one of the compressors to allow it to work in series with the other. If all you are doing is pulling a vacuum to draw out air bubbles, then a single stage is fine. Pulling a lower vacuum won't make much difference past a certain point if a bubble is trapped then lowering the vacuum even more isn't going to help. Since you are going through the trouble then why don't you pot the transformer in epoxy instead of oil? Once the resin is set then you don't have to worry about the mess of oil again. Also, for your paper layers I would use plain paper. The ink on newspaper could provide a conductive path for arcing. Although, if paper gets hot and turns brown or black then it starts to become conductive. Maybe Kapton tape will work for you here. I'm not sure how high a voltage it's it can be rated for. If you do try epoxy you will want to use a slow set resin and possibly keep it chilled for the first few hours to prevent overheating when too much epoxy is allowed to sit in a small space for too long. Blending with milled glass powder can help by lowering the amount of epoxy and by improving the thermal conductivity. ... At any rate, after removing from a vacuum transfer the transformer to a pressure chamber and pump up to 25 to 50 PSI. That will crush any remaining trapped bubbles. It's actually easier to get rid of bubbles with pressure than with a vacuum. With a vacuum there is only so low you can go. Sometimes a bubble or void simply won't disappear. In fact, it' possible to get vacuum "bubbles" -- these are just voids filled with vacuum. I'm not sure what holds them together. They don't look round like normal bubbles. Sometimes a vibrator can collapse them. But if that doesn't work then a pressure chamber will always get them. Once the epoxy is set the bubbles won't return. Great looking transformer, by the way.
What is turns ratio? Looks like its ran on zvs driver. Good thing it is under oil. I see possibility of the arc being modulated to play music with pwm driver. Great job lol. The oil should insulate and cool the transformer
How do you keep the vacuum in the mason jar?? Silicon?? That"s what it looks like to me.. If it works as good as you claim,Great ! you saved alot of people money who figured it should be welded.. Maybe you did weld it and added the silicon,"just in case" a leak sprang up...
Maybe it was just the word didnt vome to u but incase u havent come across it ...More liquid = more viscous..viscosity is the concepts name. awesome video!
I want this project to be on my final submissions. Can you please mail me the full schematics so that I can make it working? Please help me making it. I will be so grateful. Thanks for making this awesome video.
I suggest using a diy vacuum container, use a small plastic bag and small plastic box with your transformer in it and add some resin, pump out all the air and let the resin cure, no air bubbles and you can have an enclosed, solid state, oil free transformer.
Hahaha maybe a little... I probably should have waited even longer cause a couple little bubbles would come out every once and a while! I have a slightly bigger fly back core! Maybe I should build another one! Maybe I'll do 700 turns on the next one. Thank you!
When you wind it are you going from left to right or are you starting from the same starting point and going the same direction with each layer. PLEASE HELP!!
Excellent !! , I want to know where is the primary winding of Flyback transformer before using its core, as Its not clear to me, I assume inner turn(27 turns 6 separations) are secondary but cannot figure out where is primary winding when you showed its slices at 1:30, I shall be very thankful to you.
I love this kind of stuff, but it just scares the living crap out of me to the point where I'm too nervous about it to actually build something myself. How dangerous are these things?
I'd say mine is pretty dangerous. It probably wouldn't kill you but I'm not going to test that any time soon. If it doesn't kill you it would give you a world of a burn. It's safer than a MOT I might add.
Is it really necessary to have it under vacuum for a week? That seems like a bit overkill. I’m genuinely asking. I have an HVAC vacuum pump for work, and it will pull all the air out of an entire air conditioning system and like 15 minutes, but I’ve never tried to pull all the air out of something like that.
Probably not. I was just going over board. There were still some occasional bubbles coming off but I'm sure they would shrink down to microscopic size after pressure is back. This was also done with a refrigerator compressor which doesn't pull nearly as good a vacuum as a proper vacuum pump.
Hey man, I just burned up the secondary on my tv flyback. I have the core now but the thing is, I don't know how to wire the primary. It looks like yours has four wires. I was powering my flyback with a 120 watt lamp ballast by using a two wire input. I don't know how to connect up those same two wires to the four wire input. I found the idea of the lamp ballast here on RU-vid and it makes almost four inch white arcs but I'm not sure how to wire it. You may know Thanks
7:53 laws of hydraulics apply. If you'd like to produce a fantastic vacuum, get some mercury and let it draw out the last of the air using gravity down a long column.
I made one and it has about 1075 windings now i just need zvs driver. But with the simple 1 transistor driver i just get about 5 mm arcs with 3.7 v input,gonna try with 12v later
I'm sorry for my lack of knowledge in physics but what does removing all the air do? from the inside the transformer? What are the dangers of NOT removing the air beforehand?
Air has a lower resistance than the oil. So it's more likely that it would arc inside the transformer if all the air is not removed. Internal arcing would totally ruin the transformer. Thank you!
Makerj101 Very nice video. There is a way however to do way higher voltage coils WITHOUT the need for the oil as a better insulator. And if you do submerge them in oil as you did you can even go higher. The trick to all this is to NOT allow parts of the high voltage coil with high voltage built-up to overlap. Let me explain. Suppose you have 10 turns on the primary, and supply it with 220V AC. This means that on every 10 turns on the secondary you have 220V AC. If you lay your secondary as you did, layer by layer, where each layer has say 200 turns, you will make parts of the coil come close that are quite high voltage (after 200 turns you will have a built up of (200/10)x220V = 20x220V = 4400V) and hence you will need a better dielectric than air to avoid arcing. One way around to all this is to start your high voltage coil from one side, grow it a few turns on the spot to grow a few layers, and continue growing layers bit by bit towards the other side. This way you will keep to a minimum higher voltage parts of the coil come close. If you grew a six layer coil this way, i.e. every six turns one on top of each other you moved a bit to the right, the highest voltage you would get accross all parts of your high voltage coil, again based on the previous example which would amount to building a 26400V coil, would be only: (6/10)x220V = 132V. This is a 3333% improvement on how high you can get! This arrangement only works when the secondary is separated from the primary as you have in your video. If you had your primary underneath or on top of the secondary, the secondary would not short-circuit through itself, however it would shortcircuit through the primary, as its high voltage ends would find an easy path for electricity to follow through the primary. I hope this helps with your future high voltage coils.
Thank you! Ahh I see! But how would I be able to stack the windings on top of each other? The transformers I've seen that use that sort of idea use some sort of bobbin that has diffident. Thank you!
Lets say you need the equivalent of a 5 layer stacking but wired for high voltage (not arcing with itself requirement imposes a construction rule of keeping ends away). You would wind one winding forward direction (e.g. to the right), two windings backward direction (left) and then two windings again to the forward direction (right). Then you would repeat pattern (1 right 2 left 2 right) to make the coil as long as you require. However, if you have the luxury of using a longer core, you would not need to consider multilayer packing. Ofcourse multilayer packing would make your design more compact.
hey, how would I build a device or circuit that i could used to electrocute moles???? I was thinking if putting 2 wires looselly twisted together in different areas of the its tunnel bunch up together and electrified(thin insulated transformer wire) and when they start to chew on it because it is in its way then BAM!! the right amount of voltage to fry the annoying little critter that keeps turning over my lawn. I have been putting pellets from the hardware store with no results.....thank you IF you respond!
put tin foil around the hole or thin copper wire then get a microwave oven transformer and put one side coming from the core and the other from the hv output be careful it will try to kill u it will buttfuk those moles xD
hlo hi sir is there any problem if that thing you got from flay back (black ) , can i use broken that one , that is just broke from 1 side , so can i use for this project ?
i have a REALLY REALLY old MOT that pulls 3kw when the shunts are removed, while the primary stays at a manageable temp, and the copper pipe i used to test glows red hot. (with no fan cooling) would this work to make a slightly more idiotically powerful design?
Its enameled wire and he using newspaper every layer to isolate the windings. Then he puts the whole thing in oil which provides much better isolation than air.
@@albatross_v2 is it the enameled wire they call magnet wire? That's the stuff whose windings always look uninsulated to me but I guess that's misleading.
Yes, magnet wire is enameled wire. The enamel is very thin and sometimes looks like copper so it can look uninsulated. Because it's enamel is thin they insolated each layer with newspaper.
snaprollinpitts You can use a hacksaw to cut them off. It takes a long time though. Or if you are lucky you can find a flyback that does not have the core glued in. Then it comes out really easily. But most are glued in and won't come out that way without breaking. So cutting the flyback apart is probably the best thing.
wise man, enjoyed your vid , im interested in making a powerful ozone generator and the high frequency provided by fly backs makes the highest ionized plasma you can get,far better then 60hz ozone, any way im currently running a 60 watt device, any more then that and the device starts to heat up to much for my liking , also my electrode size limits the current
the fly back bothers me the most but basically it all gets hot, it also has a frequency modulator nob on it but i think i have it at 10,000 volts , it adjust from 7000 to 10k
hi. do the two parts of the ferrite core need to be connected?? because i took a core from a crt tv flyback transformer and it had this little insulator between each part.
That's a good question! I'll tell you, I have no idea! I'm sure it has some effect on inductance and resonance. They put the insulating bits there for a reason in the TV application. I ditched them when I put my core together. I figure no gap will have higher power ability. But just a guess.
Can you help me...as no one else will,....I need to know the easiest way to keep back EMF from reaching a DC power supply...ie...flyback primary coil that is not centertap fed.
John Kerley That is a good question that I wonder myself. I use MOSFETs that are rated at 200 volts so they can handle pretty big back EMF spike from killing them. I think if you have a properly tuned circuit the capacitor and inductor should absorb a lot o the back EMF. But how to get a properly tuned circuit is also something I do not know. Try asking Anthony. ru-vid.com He knows a lot about high voltage and have build some really powerful ZVS drives and such. Best wishes. Sorry I couldn't help more.
Hints: USE Blank paper the news print can become conductive since it's a carbon. Put Lacquer lightly over the final wind layer before covering with clear paper. Keep the coil turning slowly as the lacquer dries so it's evenly distributed over the coil.
also ~~~ coconut oil iz the highest temperature oil (az far az i know) i dont know about the other oil suggested by other friend ,, but yea coconut and i dont know if itz good or not but when itz cool it iz a solid
Hi Makerj101, Great video! I'd like to wind my own. One thing I don't understand; how did you get the secondary onto the core? Does the core split open or something? The video jumps from you taking the secondary off of your winding machine to it showing it already installed on the core. Thanks for you help.
Quick question makerj101, So I have 2 identical zvs drivers and 2 different fly backs, is there a way to put the outputs of the zvs drivers in series or would I have to use one zvs and 2 flybacks
+Platinum Science I'm not sure if you can do that or not. I think flyback transformers have rectified output. I've seen this done with ignition coils tho.
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I would of used wax paper between windings . I have used wax paper for many of the transformer I have made especially hi. Voltage transformers. The oil. Is a good idea . Should use mineral oil. Silicone rtv is excellent for hi. Voltage circuits to prevent arcs and Corona , etc.
