Parallel GU81M Tesla Coil (This already SCARES ME NOW!)

แชร์
ฝัง
  • เผยแพร่เมื่อ 24 ม.ค. 2025

ความคิดเห็น • 108

  • @JohnAltenburg
    @JohnAltenburg 8 วันที่ผ่านมา +9

    I started a project like this and realized I had no idea about the many problems with keeping myself alive at the same time. So I just watch others now.

    • @marvswelt2587
      @marvswelt2587  8 วันที่ผ่านมา +4

      @@JohnAltenburg yeah such a project can be seriously deadly in the "wrong" hands.
      The other thing is, it thakes soooo much time, to get it into perfection. Sometimes it is almost depressing😅 i still after almost 400 hours of working on that thing, search and find problems in the configurations.. its like a never ending Story...but that is also the nice thing at such a project🙂

    • @ferrocerium123
      @ferrocerium123 5 วันที่ผ่านมา

      @@marvswelt2587 hahaha sooo true 😄😄😄

  • @iliketohideincloset
    @iliketohideincloset 18 วันที่ผ่านมา +3

    scary and beautiful at once indeed. great work marv.

    • @marvswelt2587
      @marvswelt2587  18 วันที่ผ่านมา

      @@iliketohideincloset oh yes🙂 thanks!

  • @TheCrazzyToobinator
    @TheCrazzyToobinator 13 วันที่ผ่านมา +2

    That has the coolest sound and break out for a tesla coil

    • @marvswelt2587
      @marvswelt2587  13 วันที่ผ่านมา

      @@TheCrazzyToobinator thanks mate😇 yeah i love the Sound too!
      At my previous build with only one tube, it sounds even warmer.. sometimes it reminds me of just hitting a pillow with the hand😄

  • @Jonodrew1286
    @Jonodrew1286 18 วันที่ผ่านมา +2

    Awesome result - its not quite rutting season but some nice antlers you have there !!! 😂😂😂😂🙏🙏🙏👌👌👌Almost curious to try one I have a tube and some mots - - I have an 833c VTTC set up and its small but punchy - curious about the power of a GU-81 🤷🏼‍♂️

    • @marvswelt2587
      @marvswelt2587  18 วันที่ผ่านมา +1

      @Jonodrew1286 thanks!😄 haha oh yeah the arcs really looking like that 😀
      The 833c is really close to the gu81m in Power!
      I would recommend a GU81M the version without the M have a internal capacitor and i heard sometimes about, that these can fail pretty quick in such really hard VTTC applications, when something goes wrong... but i have really little knowledge about the gu81.
      but the GU81 and GU81M are absolute Tanks, and can be pushed really hard when the circuit is good tuned😁

    • @Jonodrew1286
      @Jonodrew1286 18 วันที่ผ่านมา

      @ I have seen their plate and grid power pushed beyond their ratings - have you ever had to contend with arcs between primary and secondary 🤔

    • @marvswelt2587
      @marvswelt2587  18 วันที่ผ่านมา

      ​​@@Jonodrew1286 yeah in this application, the anode peak voltage can reach about 8 Kv thats more than the double rating😅
      In this case the circuit has to be really good in tune, because when something goes wrong, the tubes grids can get damaged or destroyed by internal arcing in the tube.
      Yes in my beginnings i had 2 or 3 arcovers betwen the primary and secondary because i was really off with the tuning (the primary was tuned way to high)
      That arcing can happen also when the tuning gets off to much by secondary loaddown of the big arcs.
      Its good to tune the primary frequency (over the humb) 10% lower than the secondary.. so its getting in tune by itself when the arcs getting bigger and loading down the secondary.

  • @electrogravlabs
    @electrogravlabs 17 วันที่ผ่านมา +1

    Very nicely done bro

    • @marvswelt2587
      @marvswelt2587  17 วันที่ผ่านมา +1

      @@electrogravlabs thanks mate!😇🙌

  • @beatbuzzergebastel
    @beatbuzzergebastel 14 ชั่วโมงที่ผ่านมา

    Krasser output. Da werde ich erstmal einige Iterationen brauchen, um mit einem SSTC Aufbau auch nur annähernd in die Nähe zu kommen ;-)
    Meine letzten Tesla Trafo Versuche von vor 20 Jahren waren da herbe enttäuschend.

    • @marvswelt2587
      @marvswelt2587  12 ชั่วโมงที่ผ่านมา

      @@beatbuzzergebastel 😃danke!
      Das war aber bis jetzt auch wirklich viel Arbeit gewesen🫣 bin schätze ich schon seid knappen 400stunden an dem Projekt.
      Aber der Weg ist ja das Ziel🙂

  • @Machiuka
    @Machiuka 15 วันที่ผ่านมา

    Cool project. I have 4 pieces of GU81 that I've used in my heating experiments. Now they are parked on the shelf.

    • @marvswelt2587
      @marvswelt2587  15 วันที่ผ่านมา

      @@Machiuka thanks!😁
      Oooh maybe a VTTC with 4 tubes in parallel?!😜

  • @dmorologeria3875
    @dmorologeria3875 10 วันที่ผ่านมา

    Complimenti, davvero un ottimo risultato, le GU81 sono ottime valvole!

    • @marvswelt2587
      @marvswelt2587  10 วันที่ผ่านมา

      @@dmorologeria3875 thank you!🙂
      Unluckily my Smartphone dont want to translate your comment😅 so i cant understand it completely.

  • @ErikAnderson-s6h
    @ErikAnderson-s6h 17 วันที่ผ่านมา +1

    Nice deep space engine.....vacuum travelling.

    • @marvswelt2587
      @marvswelt2587  17 วันที่ผ่านมา

      @@ErikAnderson-s6h haha😄👽💥🚀

  • @paulkeenanmusic
    @paulkeenanmusic 17 วันที่ผ่านมา

    beautiful work!

    • @marvswelt2587
      @marvswelt2587  17 วันที่ผ่านมา

      @@paulkeenanmusic thanks!🙂

  • @1000000volts
    @1000000volts 17 วันที่ผ่านมา

    Very nice VTTC , Never made one of them before , That ozone can be bad stuff , I think my asthma was caused by it . Subbed ..

    • @marvswelt2587
      @marvswelt2587  17 วันที่ผ่านมา

      @@1000000volts thanks mate🙂🙌
      Yeah i heard that some people reacting really bad on that ozone! Also on other released gasses by such arcs... i never had problems with that. But yeah safety first! And i dont stay too long in that ozone smell.
      Thanks for the sub🙂

  • @Kinetic_CGI
    @Kinetic_CGI 16 วันที่ผ่านมา +1

    Nice beautiful coil, Just get some ventilation going in a enclosed space as Ozone and Nitrogen Dioxide might build up. I would love to make my own coil one day. Would also be neat with some sound modulation. Kinda looks like a burning bush.

    • @marvswelt2587
      @marvswelt2587  16 วันที่ผ่านมา

      @@Kinetic_CGI thanks mate🙂🙌
      Yeah, that output of this coil is getting bigger and bigger. Now like you said, i have to open all my Windows, before i power this thing up, because even my big room fills up instantly with the gasses.
      Yeah try it!😀 it takes really some time, but it is a really nice project! Im absolute addictet to it since the last 2 months😄
      Sound Modulation would be really cool! But in that powerrating it is impossible to do that with these tubes, because they running on their edge of overheating, even with one way rectifier...when i imagine, they would get that power with smoothed DC, i think they would melt in seconds😅

  • @johnnorth9355
    @johnnorth9355 2 วันที่ผ่านมา

    Mum - the TV just went crazy !

    • @marvswelt2587
      @marvswelt2587  2 วันที่ผ่านมา

      @@johnnorth9355 🤣🤣

  • @NavinduEL
    @NavinduEL 5 วันที่ผ่านมา +2

    Nice tesla coil bro. ❤ how did you manage to make like this tesla coil❤

    • @marvswelt2587
      @marvswelt2587  5 วันที่ผ่านมา +1

      @NavinduEL
      Thanks mate😁
      I just build it😂 Details would fill up books😅

    • @NavinduEL
      @NavinduEL 5 วันที่ผ่านมา +1

      ​@@marvswelt2587I made a small tesla coil . I know how hard to make one . I subscribed you ❤to see more videos of your channel❤

    • @NavinduEL
      @NavinduEL 5 วันที่ผ่านมา

      ​@@marvswelt2587I subscribed you for more future videos ❤

  • @antoniocannizzaro7032
    @antoniocannizzaro7032 18 วันที่ผ่านมา +2

    really very cool the gu-81m never disappoints with these specifications you could try replacing the gu-81m with a gu-5b making some slight modifications and you would have even more power

    • @marvswelt2587
      @marvswelt2587  18 วันที่ผ่านมา +2

      @@antoniocannizzaro7032 thanks!😁
      Yeah i was searching a while for a gu-5b but didnt found one here in germany.
      But i think when i tune my setup really good and squeeze everything out of the two gu81m i will get enough 😅 i only have 3phase 16A Power avaiable and im a littlebit limited of my eighbours living under me...i think they will not really like me by crashing their Internet while doing 1,5Meter arcs at home😆

    • @antoniocannizzaro7032
      @antoniocannizzaro7032 18 วันที่ผ่านมา

      @@marvswelt2587 here in Italy there is the same situation, vacuum tubes are not found anywhere, but perhaps by limiting the power it is possible to make the gu-5b work with 3phase 16A Power available

    • @marvswelt2587
      @marvswelt2587  18 วันที่ผ่านมา

      @antoniocannizzaro7032 yeah these big old Transmitter tubes are getting more and more rare.
      I can find many on eBay, but they have to get send from ukraine or romania... im not Sure about to try it.
      Yeah i could run 6 MOT's on 2 phases, or winding a custom transformer for 2 phase application.. install a bigger cable to my workbench and get 25A breakers 😄 then i could easily push the gu-5b to its Limits.. but i think its a littlebit risky with my neighbours...and its not my house😅

    • @antoniocannizzaro7032
      @antoniocannizzaro7032 18 วันที่ผ่านมา

      @@marvswelt2587 Since I couldn't find any, I tried to get a gu-81m on ebay, it should arrive soon

    • @taotao401
      @taotao401 18 วันที่ผ่านมา

      @@marvswelt2587i have two gu5b if you want i am living in francd

  • @tiredironrepair
    @tiredironrepair 11 วันที่ผ่านมา

    That is the most awesome arcs I've ever seen! Nice. Do you get ozone at that frequency?

    • @marvswelt2587
      @marvswelt2587  11 วันที่ผ่านมา +1

      @@tiredironrepair thanks a lot!😁 yes! This produces a lot of ozone and other gasses... especially in Winter its bad to work on these, because i have to open the Windows everytime when i fire this thing up😅

  • @condocord7544
    @condocord7544 4 วันที่ผ่านมา

    nice

  • @leavemyrightsalone
    @leavemyrightsalone 7 วันที่ผ่านมา

    Looks like something out of the film The time machine.

    • @marvswelt2587
      @marvswelt2587  7 วันที่ผ่านมา +1

      @@leavemyrightsalone haha😆
      a Time machine would be really nice😄

  • @MakeElectricity
    @MakeElectricity 7 วันที่ผ่านมา +1

    good for wireless welding😅

    • @marvswelt2587
      @marvswelt2587  7 วันที่ผ่านมา

      @@MakeElectricity haha😆 yeah you just have to aim it somehow🥴🤣

  • @arthurmario5996
    @arthurmario5996 10 วันที่ผ่านมา

    nice!

    • @marvswelt2587
      @marvswelt2587  10 วันที่ผ่านมา

      @@arthurmario5996 thanks🙂

  • @TheTwistedTraceur
    @TheTwistedTraceur 7 วันที่ผ่านมา

    its like a lightning tree if you make it so fast

    • @marvswelt2587
      @marvswelt2587  7 วันที่ผ่านมา

      @TheTwistedTraceur
      Haha yes! I love it😁

  • @JulianMakes
    @JulianMakes วันที่ผ่านมา

    if you touch this plasma what sort of problem would you have? terrible burns and electrocution? thanks

    • @marvswelt2587
      @marvswelt2587  วันที่ผ่านมา +1

      @@JulianMakes good question🙂
      At first. NEVER Touch it!!
      Especially when its ab big tesla coil.
      But you can Touch the arcs of a coil, that is build like that schematic..
      Direct to the skin, it would burn you a bit.. when you do it too long, your nerves might be damaged over time and you got really deep RF burns.
      It should not shock you badly, because the frequency is so high, your nerve system will not react to that.
      But... when you Touch the arc, you will load down the secondary coil. When you have a badly tuned System, this can throw it completely out of tune and the possibility is high, that you get arcing over from the secondary to the primary coil.
      This would allow to get you in contact with the (in my case 8KV) powersupply at low frequency..
      This would shock you really badly or in Bad case, deadly.

    • @JulianMakes
      @JulianMakes วันที่ผ่านมา

      @@marvswelt2587 oooof ok tyvm!!!!!

  • @Michael-r4w9j
    @Michael-r4w9j 12 วันที่ผ่านมา

    No doubt bad ass

    • @marvswelt2587
      @marvswelt2587  12 วันที่ผ่านมา

      @MichelleRichards-f7t
      Haha thanks😄🙏

  • @leavemyrightsalone
    @leavemyrightsalone 7 วันที่ผ่านมา

    So what are storms when we see lighning strikes?

    • @marvswelt2587
      @marvswelt2587  7 วันที่ผ่านมา

      @@leavemyrightsalone i would say, the only storm that here exists, is a electromagnetic storm😄

  • @andrewthuku2638
    @andrewthuku2638 13 วันที่ผ่านมา

    Just curious, what would be the results if you put a coreless coil above and near the ark, could you transmit the power to another receiver or loop back the power to source?

    • @marvswelt2587
      @marvswelt2587  13 วันที่ผ่านมา

      @@andrewthuku2638 yes for sure this will work🙂 but it will be extremely inefficient... also looping it back to the source would not doing anything.
      The "pickup" coil has to have the exact resonance frequency of my tesla coil🙂

  • @solarsynapse
    @solarsynapse 14 วันที่ผ่านมา

    I have 2 MOTs series in, series out, no ballast, pulls close to 30A at 240VAC using 10Ga wire. Massive arch welding static gap, but coil only has 5 inch sparks. :(

    • @marvswelt2587
      @marvswelt2587  14 วันที่ผ่านมา

      @@solarsynapse what did you mean with "series in and series out"? 30A on average or is this the current at switching it on? When your MOT's draw that much current on average, they are just almost like shorted out. You definitely need a Ballast, and need to solve other problems in the circuit.
      Maybe not tuned right?
      I got around 1 Meter arcs with my SGTC 7 years ago. I used a 4 MOT powersupply

    • @solarsynapse
      @solarsynapse 14 วันที่ผ่านมา

      @@marvswelt2587 120VAC primaries in series connected to 240VAC. Secondaries in series for roughly 46KV out. Close to 30A when arching. Gets hot fairly quick.

    • @marvswelt2587
      @marvswelt2587  14 วันที่ผ่านมา

      @@solarsynapse what is the Rest of your setup? How many primary windings? Secondary windings? What capacitors with what capacitance do you use?
      2 MOT setup in a static spark gap teslacoil delivers not enough voltage.
      It might working, but the short high current arc is not ideal, especially for a static gap

    • @marvswelt2587
      @marvswelt2587  14 วันที่ผ่านมา

      @solarsynapse aah ok now i get it😀 so you run it on 2 phases.

    • @marvswelt2587
      @marvswelt2587  14 วันที่ผ่านมา

      @@solarsynapse at first, it is much easier with sparkgap coils, to have around 8 to 15kv (or even more) and using multiple spark gaps, with a fan, that blows off the arc and cooling down the sparkgap.

  • @Michael-r4w9j
    @Michael-r4w9j 12 วันที่ผ่านมา

    WOW I bet it's loud

    • @marvswelt2587
      @marvswelt2587  12 วันที่ผ่านมา

      @MichelleRichards-f7t
      It is actually not that loud, but yeah also not quiet😄
      It depends how good it is in tune and how hard i drive the tubes.
      But its more like you Hit hard with your hand on a pillow.. when out of tune, its can be like a clap. 😊

  • @IanDarley
    @IanDarley วันที่ผ่านมา

    Be aware of objects picking up the field and arcing. My camera tripod was about six feet away and I didn't notice there was an arc from the legs which burnt the carpet. It could be bad if that happened inside a wall or ceiling.

    • @marvswelt2587
      @marvswelt2587  วันที่ผ่านมา +1

      @@IanDarley yes, thats actually a thing not many people care about!
      I always stay for a while, after Tests with my VTTC
      Because im really afraid about that.
      I have seen that first some months ago in an video, someone had a toroid leaning against a Radiator, and it arced over.

  • @TheTwistedTraceur
    @TheTwistedTraceur 7 วันที่ผ่านมา

    maybe if you are going stronger, maybe do outside?

    • @marvswelt2587
      @marvswelt2587  7 วันที่ผ่านมา

      @@TheTwistedTraceur yes, i think in that room i have Limits.
      But i dont think im able to reach the roof with that configuration. There is some air left😁

  • @janno288
    @janno288 13 วันที่ผ่านมา

    Whats your doubler capacitance?
    4uF or 8uF?

    • @marvswelt2587
      @marvswelt2587  13 วันที่ผ่านมา +1

      @janno288
      Its 2uF

    • @janno288
      @janno288 13 วันที่ผ่านมา

      @marvswelt2587 Thats even stranger. I was told that more capacitance you have is better to get long streamers since the ramp voltage is more stable.

    • @marvswelt2587
      @marvswelt2587  13 วันที่ผ่านมา +1

      @janno288 yes exactly.
      First i tought i had 4uF but that was a brainfart😅 its actually just 2uF
      Or 2,5 now, because i found some old microwave ovens on eBay for 5€
      But yeah... have to invest for much more... 8 caps are on their way now, so i get it up to 4,5uF in 2 weeks when they arrive.

  • @ScoobyDios
    @ScoobyDios 16 วันที่ผ่านมา +1

    holy fuck

    • @marvswelt2587
      @marvswelt2587  16 วันที่ผ่านมา

      @@ScoobyDios 😆😆🤘

  • @theiaminu5375
    @theiaminu5375 15 วันที่ผ่านมา

    You dont need more capacitance , you need less windings on the primary ....

    • @marvswelt2587
      @marvswelt2587  15 วันที่ผ่านมา

      @theiaminu5375
      Hmm you could be right.. because of the 2 tubes, the impedance matching is propably off..
      I will try that🙂

  • @foamaxmore
    @foamaxmore 13 วันที่ผ่านมา

    By the looks and sound of your coil it seems very dangerous if you were to get hit by it.

    • @marvswelt2587
      @marvswelt2587  13 วันที่ผ่านมา +1

      @@foamaxmore getting Hit by it is actually not that dangerous. There are some people out there, touching these arcs with their hands... i personally dont like to do it (and never done it) because, when something goes technically wrong at that moment, this of course can shock you really bad and can be deadly.
      But in normal cases, the frequency is too high and our nerve system and muscles are not able to react/contract at these frequencies.
      But you can overheat your outer and inner tissue by getting the arcs for too long on your body parts. It is known as RF burning and also can damage the nerve System.
      So yes this stuff is extremely dangerous in the wrong hands...
      The power supply at otherhand will kill people instantly. This is no joke.

  • @ErikAnderson-s6h
    @ErikAnderson-s6h 17 วันที่ผ่านมา

    Tree

  • @agentorange3774
    @agentorange3774 4 วันที่ผ่านมา

    Almost looks like a persons arteries

    • @marvswelt2587
      @marvswelt2587  4 วันที่ผ่านมา

      @@agentorange3774 yes, also it reminds me of the structures of capilares in plant leafs

  • @Fanah-4-ilaahi
    @Fanah-4-ilaahi 13 วันที่ผ่านมา

    i can't believe instead of discover or research something new people just plying with these kind of shit like its a toy..

    • @marvswelt2587
      @marvswelt2587  13 วันที่ผ่านมา +1

      @@Fanah-4-ilaahi lol🤣
      Whats your Problem with that?

    • @Fanah-4-ilaahi
      @Fanah-4-ilaahi 13 วันที่ผ่านมา

      @marvswelt2587 u tell what's the purpose of that ??

    • @marvswelt2587
      @marvswelt2587  13 วันที่ผ่านมา +1

      @@Fanah-4-ilaahi the main purpose of this is mainly learning about really complex electronics/physics.
      This teslacoil itself has no other purpose but fun. But the way to get there is really long and is a really good practise in experimenting.
      This is nothing you can just build off a circuit diagram and it will work perfectly... this is something you need to understand complex connections and interactions.

    • @marvswelt2587
      @marvswelt2587  13 วันที่ผ่านมา +1

      @@Fanah-4-ilaahi when you want to see how i discover new things, you will find some Videos on my channel, where i build a device for electric guitar soundeffects (effectspedal).. This is very unique. But the Video is on german.
      I als building tube amplifiers for bass and guitar, based on my own scematics for my Band and other people..