Checkout the website www.sparkstarter.tech

@robinsoncrusoe2775

3 жыл бұрын

you coud use for the heater the heater 3,7V heater coil and rectifier it to dc 5,2V and dont needen the another transformer.

As a nonprofessional i must say you axplained some stuff i never heard one explain like this for a vttc thanks for that. Awesome arcs too for that small coil

Great job buddy, congratulations, and thanks for sharing.

Thanks for your kind comments... I hope someday you get a camera and share your coil. All the best.

Beautiful build 😁 love it!!!!

Awesome results for your coil size!

Watching in 2018 super

Oh boy ! ... wondered what to do with all those diathermy tubes besides ham radio ! thanks ! I love the fire shape !

I had made VTTC with 807 or 1625 valve (I fit both type sockets and they perform similar) and works at around 950kHz to 1MHz. I use 10kV diode from corona wire in copy machine. HV supply from 420VAC transformer which give 600VDC. I variate G2 voltage to control the output power. It is true that parallel RC for G1 is not critical value. Unfortunately I don't have any camera so I can't share my experience. Anyway, salute to mr. SparkStarter.

Thanks for posting this. I am close to assembling the parts for a build using a 572b. Just need to cannibalize one more oven for the transformer. What are the specs of your grid leak capacitor? Thanks again....subscribed!

ok thanks for the reply ,the diodes i have are semicron Semipack 1's so i could use more than 2 and because of the casings i can put them on a big heat sink i was thinking about back spikes earlier and thinking of maybe adding a small neon and mov but not sure if that would effect the running of it but i guess there is only one way to find out ;-) i just love the simplicity of your setup I will be more than happy to get half the result you got .great vids by the way and thanks

Great video Thank you!

freaking A ! Great video!

@sparkstarter

6 жыл бұрын

Thanks for the comment.

Hello, I was wondering if you were to replace the MOT with a modern MO Flyback driven by a ZVS driver, what kind of modifications would you need to make to your circuit? Also would it be better rather having a separate transformer to add another coil to the main transformer for the heating of the VT's filament? Thanks

@sparkstarter

8 жыл бұрын

+Camubish Interesting question I've started getting interested in ZVS drivers myself. The difference is that the MOTs are 2kV at 500ma where as flybacks are 20kV at 50mA. If you designed a flyback that would be 2kV 500mA I think it would work with little modification. I've tried to eliminate the 2nd filament transformer in different ways which work but after some time operating the coil or doing some experiments the low voltage insulation fails. I created a custom filament transformer with heavy duty HV insulation and never had a problem since.

I do not have a great experience in the field ... every time I wonder what are the values ​​of the capacitor? For example .. in your diagram there is a capacitor 3NF and another 500pF .. I'm getting what are the value of the voltage? or if you can enlighten me on this subject I would like to know more :)

What is the difference betweek regular tesla coil and vacuum tube tesla coil? Why does the sparks look different with the vacuum tube?

Hi, your setup is very nice and compact. Is there any free source to download the book that you showed at the beginning?

Greetings, very impressive! I would like to buy the Vacuum tube tesla coil book you recommended, but apparently there is no more printing copies. Do u know where I can get it? Also I would willing buy a copy from yours , Thx u.

I may be wrong but would it be easier to provide a alternative power source for the filament instead of stepping down the voltage directly? It seems time consuming to get the voltage just right

Nice :) Do you know of a similar suitabe tube with separate filament that would make it easier to select any old transformer with 6.3 Volt supply for tubes?

@MrElapid

4 ай бұрын

This coil works great but if you search here, on YT you can find a schematic where the HV from the MOT feeds the tank circuit. I recently built a coil with 2 572B's and it works great. Search here for "Evans" ( the circuit designer apparently) and "811A vacuum tube Tesla coil" and it'll be very easy to find. The 572B tube is a drop-in replacement for the 811A, won't matter except that the 572B can take quite a bit more punishment as it's anode is graphite.

My tube spec. book says that the filament voltage for a 805 transmitter tube should be 10 VAC. I am building a tesla coil similar to yours. I hope I have as good results as you . Thanks for great video.

@sparkstarter

5 жыл бұрын

Yeah 10VAC misspoke

Do you have any idea what this tesla coil is pulling from the wall?

Your coil works great! But I fed the tank circuit with HV directly and used a NOS 6.3v filament transformer with a 2 nanofarad filter capacitor across the output and one side grounded. HV is applied to the anodes of 2 572B triodes via the tank circuit. It seems like the voltage gradient between filament and plate might be the only thing that matters really. Guy named Evans posted a twin 811A triode circuit here and mine's based loosely on this. He might have adapted it from a similar curcuit I saw in 1972. No MOT's then! Real plate transformers were big bucks especially for a kid like me lol delivering newspapers. Anyway rock on it's all good.

This Vttc inspired me to build my GU5B system

@sparkstarter

6 ай бұрын

awesome thanks...

Excellent ❤❤❤

beautiful job, beautiful spark

@sparkstarter

9 жыл бұрын

Thanks :)

@sweetguy19762

9 жыл бұрын

sparkstarter does the tesla coil use a driver circuit?

@sparkstarter

9 жыл бұрын

Owen Chase No the feedback coil makes the system self resonant.

@sweetguy19762

9 жыл бұрын

o ok

Just a question: the RCA 805 tube datasheet reports, as filament working conditions, 10 Volts and 3.25 Amps. You mention 6 Volts. Any reason for this difference?

@sparkstarter

6 жыл бұрын

yeah my mistake, I just measured, it is 10 Volts.

What gauge wire did you use on your 3 windings and about how many turns and the size of the cores Thanks for your time

hey @ 2:26 it says you use a 10 to 16kv diode what is the a reason for this as i have some 1.6kv diodes rated @ 21A and was thinking could i use 2 in series as i thought you would only need it to be around 3kv !?!?! any help would be great thanks John

very good.. congratulation

Good VTTC. You could run it longer if you add an interrupter circuit. You would also probably get longer streamers.

did you try with a vacuum tube diode?

well it will take a while as im disabled and things seem to take longer and longer .But it is my next project after finishing my X-ray transformer build which will be soon ,The only difference is i will be using a GU-81m tube and once i finish it i may try and audio modulate it but one step at a time hey thanks again John

What is the point of the resistor and capacitor that are in series with the feedback coil? I get hardly any output with those in the circuit, but if I omit those parts and have the feedback connected directly to the grid, it works.

@sparkstarter

10 жыл бұрын

Those components limit the potential seen across the grid of the tube...those values depend on the parameters of your feed back circuit. If you have a different type of tube you will need to experiment with the feed back coil and component values.

@TeslaExplorer

9 жыл бұрын

smaller wire on the secondary seems to allow for me to cheat at tuning. everything has always seemed to give more output this way. on steve wards faqs about vttc's he writes about impedance matching which by no means would exclude your secondaries gauge vs primary coupling and also gauge. maybe this can apply to you maybe not. happy coiling!

@sparkstarter

9 жыл бұрын

Tesla Explorer Not sure I follow what you are saying... I've had some success modeling coils in LT Spice. you might want to put your numbers into simulation and so you can play with factors like impedance matching.

@TeslaExplorer

9 жыл бұрын

Well in theory if you don't have the muscle in your tank circuit, don't use low impedance on the final coil.. is it possible to raise the ac voltage via coil from a thin wire "high ohm" to a thicker wire "low"? For instance all the TV flybacks. .. I'm very sure this can be proven wrong if you have the power

@sparkstarter Thanks it seems too work but my diode for the voltage doubler broke lol

The heat sink for the diodes might not be needed... the current is about 200mA so a 1amp diode will do... Glad you like the circuit design I tried to keep it simple... I would love to see your coil when it is complete, feel free to post a video response. Cheers!

Hi . Can i get the schematic from this type of tesla coil please ? In the video you only showed parts of it and i am a bit lazy to put together the schematic from the parts you showed , i may even get it wrong and then it would be a waste of time . So i'd be happy if you could reply with a link to the schematic or something thank you have a nice day.

@sparkstarter

2 жыл бұрын

It's on my website www.sparkstarter.tech

good job

Great video:) Can you tell me the cable size of the secondary, the number of turns on the primary and secundarys and the diameter of the tube you're using as secundary please.

@sparkstarter

4 жыл бұрын

thanks for the comment. I got a better camera recently I plan on making a more detailed video about the VTTC. Check back soon.

@djcat1224

4 жыл бұрын

@@sparkstarter I'm planning on building a Tesla coil like that one, thank you for making a new video.

Impressive! Just watch out for x-rays from that tube, I'd be paranoid of that thing.

Old Soviet doorknob cap for the primary RLC? Or homemade

@sparkstarter

3 жыл бұрын

don't know if it is soviet but it's an old hamfest capacitor.

Facinating circuit design! Could this theoretically function with a low current,higher voltage supply in place of the MOT? a flyback transformer perhaps?? with an appropriatly rated tube of course, like a 6CD6 or a 6LJ6-A. lemme kno what you think

@sparkstarter

6 жыл бұрын

should work, it's just a feed back oscillator circuit. You may need to experiment with the feedback coil a little to get it to work but I don't see why not.

@chrislane5925

6 жыл бұрын

cool ill try it out!

i was just curious could you post somwhere the schematic?

whats the diference if you build a tesla's coil without vacuun tube or with a vacuun tube ?

It looks like near the coil, there is a wood block, with two screws and the leads of the primary are wrapped around them. Is this meant as an RF Choke?

@sparkstarter

3 жыл бұрын

No, it is a capacitor.

is the spark??? , and them radio transmisor?

Brotha you're smart

Where can I find a PDF or print of the book you are using? I would love to read it to improve my VTTC

@sparkstarter

3 жыл бұрын

www.amazon.com/Vacuum-Tesla-Coils-James-Corum/dp/0924758007/ref=sr_1_2?dchild=1&keywords=Vacuum+tube+tesla+coil&qid=1618874718&sr=8-2

@sparkstarter

3 жыл бұрын

Seems to be out of stock on Amazon but maybe you can find it using the ISBN

Hello,..i am 15 yrs old... and i am being making small 12v tesla coil ,...and now i am thinking of taking 220v ac home supply,because i am not getting high voltage transformer in market...can you please help me making it.....or can you suggest any circuit for me...

Yes exactly..... 6VAC heats the filament. and the filament is at -3kV potential

The Tesla coil is resting on an aluminium covered section of the board, a green wire extends from the corner of the aluminium covering to earth ground.

Yeah you could try that it might work...the rectified DC output of the microwave oven transformer is about 2800 volts so 3.2kV diode should work ok for that. However higher voltage ratings are always better there is always a concern that voltage spikes could blow your semiconductors devices. Good Luck

I found a tube and i bought it its a 811A will it work for this schematic?

How do you mutual inductance?

Cool i like it, can you make one more an make a teslacoil tazer?

can i use a valve from an old TV? like a pentode or whatever it is, maybe at mains voltage.... i know it will be way smaller but just for the fun of a VTTC

@sparkstarter

6 жыл бұрын

Clever idea, might not have big sparks but could be a nice way to use old tubes.

@redoverdrivetheunstoppable4637

6 жыл бұрын

btw... did you posted that manual? i'm not sure i found it online, seems of less pages (if it's it)

@sparkstarter

6 жыл бұрын

I started a patreon account, when I get enough money I'll start a website that will host some of that info.

Uhm. Can I ask mister? Is it possible if i use 813 tube instead of 805.

@sparkstarter

3 жыл бұрын

what are the details of a 813 Tube?

Where to buy that book?

Thank uuuuu! I'am working on a system, for my power transmitter.

@sparkstarter

7 жыл бұрын

let me know how your project works out.

@vinnystvincent9788

7 жыл бұрын

sparkstarter Sure will!

@greenthizzle4

6 жыл бұрын

vinny stvincent how it go

That's kinda weird using the filliment as a kathode too. I don't know much about tubes, let alone transmitting tubes. is that normal? Also seems to me that there is an aweful lot of 60 cycle coming through being the discharge wire getting hot. Maybe a fine tuning issue? I have built spark gap coils but they really seem to be using a lot more RF to do the job, as opposed to the raw power in tube coils. Interesting design and very well explained.

@Landotter1

9 жыл бұрын

***** Thanks..... So much to learn.... i'm not a tube guy.... yet!:-D

@Landotter1

9 жыл бұрын

***** Saw your post below.... Run a wire to your cold water pipe unless it is PVC. :-/

What is the tube product number and were would i get it ? Nice video

if you take the break out pint off, do you still get sparks?

@sparkstarter

Жыл бұрын

Yes

@Kokodps

Жыл бұрын

@@sparkstarter lol it took you 5 years to answer my comment, thanks but i already found out the answer haha

It looks like your whole circuit is floating, other than the Tesla coil resonator itself and the 120V side of the two 60Hz transformers. Would it not be fine to ground the 6V supply so that high voltage insulation is not needed on the filament transformer?

@sparkstarter

10 жыл бұрын

nope

@zinckensteel

10 жыл бұрын

sparkstarter Why not? Is your circuit grounded at the anode end? It looks like a simple class-C Armstrong oscillator; the same thing I built years ago except for different tubes.

@sparkstarter

10 жыл бұрын

zinckensteel Yeah anode is grounded to the transformer, the circuit isn't really floating.

Can't you earth one side of the filament so you don't need HV insulation on the filament transformer?

@sparkstarter

4 жыл бұрын

I tried that initially but I ran into some issues... I might try that config again to see if I can make it work.

the shape of arcs is a main difference with a vttc there very Spikey but with sgtc the arcs are more flowy if that makes sense .well thats how they look anyway and yes they are radio transmitters they all make lots of RF

i live in a country were we use 220 volts do i have to use a voltage doubler for MOT

@willi11319

10 жыл бұрын

well i live in germany (230V) and our MOT's have twice as much windings ! so you have the same voltage output. (well pretty obvious because there is a doubler in every microwave to achive 4kV which is needed to make mikrowaves so every MOT outputs 2100V if it is made vor the voltage in your cuntry :) )

@TeslaExplorer

9 жыл бұрын

hey! I would keep the doubler or shift and get a step down so you use the ramp off your walls low cycle =)

your saying you have - 3kv on the filiment but you say you wound a low voltage transformer for the filiment@ 6 volt? do you mean the filament is 6v as the heater, and the cathode is @-3kv potential,sorry man i build diy radios from the 20sand30s . and im just trying to understand your set up.great vid

Can 807 Vacuum Tubes be used for building a VTTC?

@sparkstarter

2 жыл бұрын

You could probably use 807, i'm not as familiar with those...

Good

I can use a flybak Transformer to drive the circuit .maybe a AC one?

@sparkstarter

3 жыл бұрын

Don't think flybacks have enough current and they output higher voltages, the 805 is only rated for 1500V or so.

Have you ever tried creating your own vacuum tube for this? If it works, it would be interesting to see how well it performs. Im sure it would cut costs too!

@greenthizzle4

6 жыл бұрын

Power Max how would you do that? maybe you could rig one up using acrylic and a vacuum pump.. learning how to glass work that good would be hard

3kV on the plate voltage seems like you're driving the tube really hard (rated for only 1.5kV max?). How long can you run your coil before the plate is cherry red.

Rather than thinking of the tube's cathode as being at a high negative voltage, if you put it at ground you do not need the HV isolation XFMR for the 6.3VAC filament power. As with most other vacuum tube circuits the tube's plate (anode) circuit potential would be treated as one with a highly positive DC voltage. This would simplify the heater XFMR to an off the shelf type. Move the negative output lead of the HV supply (pointed to at 5:09) over to the other side of the filament and also ground that same point. That way you'll have only a very low DC voltage between the secondary winding of the fil. XFMR and its' core. On the Plate side however, you will need to treat it as a high DC voltage circuit that is capable of about 2KW and more than enough power to kill a man with a single touch. When you have a child, that becomes a very important consideration because HV with high current is a potential "widow maker". The 3nF cap with resistor in the grid circuit is to create an AC ground for the cathode side of the grid RF feedback winding and also to hold a DC charge that is used as a negative DC supply to bias the tube off between pulses received from the feedback winding. The resistor is to complete a DC path for the bias rectification circuit. If that 3nF cap or resistor fails, the tube will tun on hard and stay on, quickly causing the plate to become red-hot and destroy the tube. Make sure that does not happen by using a cap. with high rated voltage. Sorry to talk so much but it seems these days young people are not given any chances to work with highly experienced people. School alone is not nearly enough because professors don't usually work in the field they teach therefore, they lack practical knowledge and can't pass it on. That's why we used to have apprenticeships in the USA but Wall Street's MBAs have spoiled that too because they saw no value in it.

@sparkstarter

10 жыл бұрын

Your theory about off the shelf XFMRs with low voltage insulation doesn't work well in this circuit. The RF finds a way through the filament transformer to ground and destroys it. If you had more practical experience with VTTC you would probably understand...

@joesitter20101

10 жыл бұрын

sparkstarter I'm very sorry Sir, i did not intend to insult you. I've got almost 50 years of practical, hands-on exp. with electronics, mechanics, chemistry and physics. I now own a successful business rebuilding scanning electron and real time X-ray microscopy equip. The reason you have a high RF voltage appearing on the cathode side of the tube is because your HVDC supply does not have a capacitor to ground on the + side along with a good ground connection on its' neg. side. The end of the Pri. winding that is tied to the +HVDC must be held at RF ground. That is what the added capacitor will do. You need to ground the cathode (with the neg. HV terminal) as well because the DC supply should not have any RF allowed in it. Again: Put a capacitor across the + & - output terminals of the DC supply and ground the cathode with a short, flat strap of sheet brass. The RF energy that is now appearing in the cathode circuit is actually sapping power that could be driving the Tesla coil. You could be getting a bigger spark if you force 100% of the RF to appear at the leads of the primary coil rather than 20% of it needlessly stressing insulation in the filament XFMR. Man, I am not guessing about this. I know it like the back of my hand 'cause I've done it most of my life.

@sparkstarter

10 жыл бұрын

Joe Sitter Sorry Joe, I didn't mean to come across as defensive, but I built something very similar to what you suggested in my initial design and the filament transformer kept failing. I rewound with HV wire and I never had a problem since... I've been running this coil for 8 years now. If you have built a VTTC please post a video response with your designs and calculations.

nice mini vttc

Can you give form diameter and number of turns wire size etc. I intended to duplicate circuit I like the fact that most parts are salvage or inexpensive I intend to use 2, 811+ A tubes, This is a very efficient oscillator, thanks for your video later maybe a mine coil using 6lq6 sweep tube I will post the finished coil with all values when tweaked. 572+B could produce a 900 watt unit .Thanks Paul, KI4TOR

Can you still buy those vacuum tubes?

@sparkstarter

10 ай бұрын

Yes, check my website...

Do you have any schematic of it, and what tube are you using?

@sparkstarter

2 жыл бұрын

Yes check my website www.sparkstarter.tech/calcs

@ElIsraelJijijiji

Жыл бұрын

@@sparkstarter could I use the 811A triode?

@sparkstarter

Жыл бұрын

@@ElIsraelJijijiji Probably just check the rating of the tube.

@ElIsraelJijijiji

Жыл бұрын

@@sparkstarter irrc it has a higher anode voltage

@ElIsraelJijijiji

Жыл бұрын

@@sparkstarter are this coils easier than solid state Tesla's? I mean toobs are harder to destroy

Link to the tube?

@sparkstarter

Жыл бұрын

You can order the tube from me at www.sparkstarter.tech

Where can i get an 805 tube?

@sparkstarter

Жыл бұрын

I've got a few for sale on my webpage...

@ElIsraelJijijiji

Жыл бұрын

@@sparkstarter i'm gonna check it out

What Tube is that?

@sparkstarter

2 жыл бұрын

805 Vacuum Tube

I don’t get it, I must be dumb or something… how can the power tube filament be at 6VAC and -3KVDC simultaneously???? I’m obviously missing something. All I know is tube filaments are extremely sensitive to voltage so how would it function with two different voltage sources and at ac/dc??? How does the the tube differentiate between the two sources? I would think the 3KV would blow the filament instantly. I can’t find an answer to this anywhere, the book I read just assumes you already know why.

I want to know all the components and size of it. I do it for the schools, I'm not good at English. I live in Thailand. I thank

can I make this with EL34 tube??

@sparkstarter

7 жыл бұрын

not familiar with that tube, don't know.

@electronics3992

7 жыл бұрын

ok :)

@gtb81.

7 жыл бұрын

no it is a beam power triode tube, maybe if you connect the grids in parallel, not 100% sure tho with that amount of high voltage through it i believe you would cause damage to the tube, most tubes are not supposed to have voltages on them over 300 volts DC. the only reason this tube is still able to work is because it is a transmitting tube

cool

what do you mean vacuum tube Tesla Coil ? Did you mean that spark primary coil is passed through the tube vacuum Does not contain air ?x

@sparkstarter

7 жыл бұрын

Yes, the air has been removed from the glass tube.

@maniac2315

7 жыл бұрын

I use the voltage multiplier 3kv Of home electricity 230v I just want a vacuum tube ready and complete with the heating circuit

@maniac2315

7 жыл бұрын

You could send them for sale on Amazon

@maniac2315

7 жыл бұрын

You could send them for sale on Amazon

I used an RCA 805 Vacuum tube. I got mine at a Hamfest here is a link to an 805 spec sheet. tubezone.net/pdf/t805.pdf If the 811A has similar specs I'd say it should work...??

When the one coil collapses it induces content in the other

Hmm... the circuit is not a voltage doubler, it is a half wave rectifier... I would try to get a diode with a large current capacity, perhaps greater than 1amp. I remember burning a few diodes when I was first building the coil myself...

@greenthizzle4

6 жыл бұрын

sparkstarter be cooler to make it a full wave

name of vacuum tube ?

@sparkstarter

10 жыл бұрын

805 Triode Vacuum Tube

@sparkstarter

9 жыл бұрын

***** Been a while since I looked at the spec. sheet, pretty sure I saw 6.3V... but the filament current is the more critical value and I see that we are in agreement on that.

that snot how the socket is supposed to be used...

ну зачем анодное на холодную лампу подавать?

Operation @ 0:14 & 13:23

It seems that book is out of print. :-(

@sparkstarter

6 жыл бұрын

Hmm maybe I could scan the relevant pages an put them on a web page? Would that be of interest?

it looks like your red plating the tube

2023😂❤😂

Túl erősen fűtöd, hamar tönkre fog menni a cső

Power RF Oscillator, not a true Tesla Coil. You might also want to measure for X-Rays around that triode tube.

@sparkstarter

9 жыл бұрын

Michael Snyder I would define any transformer that creates voltage gain with Q as opposed to inductively coupled turns ratio as a Tesla Coil. I don't think the drive mechanism maters. What's your definition?

@michaelsnyder7442

9 жыл бұрын

It is the drive mechanism that defines it as a TRUE Tesla coil or not. Vacuum tubes or transistors were yet to be invented when Nicola Tesla invented the Tesla coil. The mechanism was based around a spark gap that used mechanical contacts, a rotary spark gap if you prefer or a mechanical transistor. This helped fine tune the resonant transformer, by adjusting the speed at which the contacts were allowed to conduct a plasma ( something Tesla did not fully understand). To a Tesla purist your setup is nothing more than a RF power oscillator, nothing more nothing less. The drive mechanism also closely mimics the original function of the Tesla coil. Vacuum tubes or transistors inject other issues, like the plates getting hot and reducing power as a result. BTW, your description of the function of your circuit needs work as does your understanding of RF circuits. In short you do not have a clear understanding of what you are working with. You have shown, yes you can build a circuit, but you don't know or can intelligently convey how that circuit works, as shown by your poorly delivered description here on KZread.

@sparkstarter

9 жыл бұрын

Michael Snyder Interesting perspective... however I totally disagree that the drive mechanism is what defines a "TRUE" Tesla Coil. Tesla fully understood how a spark gap worked and how to quench the spark or time spark intervals to improve power transfer to the coil. I'm also sure Tesla would have used tubes or power transistors had they been available at the time. Tesla was trying to eliminate the spark gap by designing generators that would operate at high frequency and supply the coil directly. This is evident in his famous patent #649,621 Apparatus for the Transmission of Electrical Energy (i.e. Tesla Coil) that doesn't even show a spark gap. Check it out, NO spark gap! BTW, many people have emailed thanking me for this post and have used it to successfully to create their own VTTC. If you think you can create a more informative video I would be interested to see it.

@michaelsnyder7442

9 жыл бұрын

Many people do not understand anything about Tesla or electronics for that matter. Again anyone can COPY a circuit and still not understand how it works, but if it does not work once built, they are stuck, without some formal knowledge. You admit to copying yours from a book. It takes real skill and knowledge to design and build one from scratch. I might just take you up on the challenge. Just because one can place a patent, does not mean it will work in the real world ( the patent office is full of such patents). Remember Tesla's energy transmission idea, that did not work either, though he got it past the patent office.. Nice idea, but that is all it was.

@sparkstarter

9 жыл бұрын

Michael Snyder Actually I read the book to get ideas and to learn, not copy. The book contained theoretical design details and historical information about the evolution of the Tesla Coil. I did not copy anything from the book there was no parts list or instructions contained. (Maybe you should actually read it. "Chapter Twelve Vacuum Tube Tesla Coils by Kenneth and James Corum) FYI - Tesla's energy transmission idea did work it was just limited in range and cost efficacy.