Very well explained even though english is not your first language it was described very adequately - your knowledge and practical skill is exemplary 🙏👍👍
I really like your candy can air gap capacitor , I think I will do something like that did your measure the capacitance ? I know it would change depending on the size and the distance of the air gap , but it looks like a nice cheap way of making a high frecuency high voltage cap in the pf range
great work, i was looking for an HFVTTC example and this seems pretty reliable, i've seen schematics without a grid leak inductor, i was wondering how you come up with choke inductance value and also that grid leak inductor, i bet the second one isn't critical
The choke is not so critical,you juat need to wind maybe 3 times more turns than the resonant coil and it would be good. You should keep in mind that the choke should not resonant at a harmonic frequency than the resonant coil or you may see arcs between the turns of the choke where have a huge voltage difference between some of the turns.For the small gird choke,the inductance is not critical as well.You can wind about 7 turns on a burned risistor as i did.The aim of that inductor is to let the tube work on Class C as in radio transmitters. Fine tune of that inductor will need highvoltage probe and current probe. During my tests I find that if you tune the grid DC current about 1/5 of the anode DC current [actually measured at cathode for safety] then your tube would be working on Class C and give out the most power it could provide at that voltage. You can find more details for Soviet book online which are about induction heating and high frequency fusing machines.I referred to the book named 电子管高频加热装置 in Chinese.
@@uecmitsuimarinedieselengin873 thanks for responding, i think i have enough hints to succeed, i'll give it a try, altough with a small tube (GU50 or a TV line deflection tube) i can't find that book and i can't read chinese :D i'll just stick with what others did and use my experience
This is a very old video and at that time I do not know quite a lot about RF 😹 so I was using a tube since it is more robust. Later I used FETs in such a circuit, for example this one: th-cam.com/video/qvRzZcaQ32Y/w-d-xo.htmlsi=XZeL37sf6qMo2Ayn
@@uecmitsuimarinedieselengin873 I'm brand new to building electronics but I have studied Tesla all my life and others. I hope I can learn from you. You are very smart. I'm studying crystal radio with only mosfet/s diodes, caps, inductor air coils. Nothing else. I want to use Earth current (pristine ground to Earth) to excite it's electronic particles/field into the receiver circuit. This is why crystal radio need to be grounded to use earth current as cathode or a source of electrons.
Very well explained even though english is not your first language it was described very adequately - your knowledge and practical skill is exemplary 🙏👍👍
no matter what anyone may say about this in the future I think it is SUPER cool
Nice electric plasma, you made.....or...rare Tesla coil...in this winter ❄️🥶... time is perfect...👍
Beautiful work love that sound
Hummmmmm hummmmm An SSTC PLL on 1/2 wave dc makes a nice noise too 👌
I really like your candy can air gap capacitor , I think I will do something like that did your measure the capacitance ? I know it would change depending on the size and the distance of the air gap , but it looks like a nice cheap way of making a high frecuency high voltage cap in the pf range
Hi sir ,i had calculated those air gapped capacitors and they are within 15-20 pF range
I love that when igniting the coil you just go for it instead of just using a stick or something 3:12
That's a pretty snazzy unit! It's probably a part 15 device by the FCC 😆
It looks so cool. I want to play! I'd like to know how much your vacuum tubes cost.
Are they plastic or ceramic coil forms?
They are ceramic,plastic material is so lossy under this high frequency RF.
@@uecmitsuimarinedieselengin873 Non polar plastics like PP are low loss, but they'd still melt because the enameled wire gets bloody hot 😹
The tubes come with X-ray warnings.
I don't think the 810 does. It only operates at a maximum anode voltage of 2.5kV
great work, i was looking for an HFVTTC example and this seems pretty reliable, i've seen schematics without a grid leak inductor, i was wondering how you come up with choke inductance value and also that grid leak inductor, i bet the second one isn't critical
The choke is not so critical,you juat need to wind maybe 3 times more turns than the resonant coil and it would be good. You should keep in mind that the choke should not resonant at a harmonic frequency than the resonant coil or you may see arcs between the turns of the choke where have a huge voltage difference between some of the turns.For the small gird choke,the inductance is not critical as well.You can wind about 7 turns on a burned risistor as i did.The aim of that inductor is to let the tube work on Class C as in radio transmitters. Fine tune of that inductor will need highvoltage probe and current probe. During my tests I find that if you tune the grid DC current about 1/5 of the anode DC current [actually measured at cathode for safety] then your tube would be working on Class C and give out the most power it could provide at that voltage. You can find more details for Soviet book online which are about induction heating and high frequency fusing machines.I referred to the book named 电子管高频加热装置 in Chinese.
The grid risistor and the grid inductor both influence whether or not the tube works on Class C.
@@uecmitsuimarinedieselengin873 thanks for responding, i think i have enough hints to succeed, i'll give it a try, altough with a small tube (GU50 or a TV line deflection tube)
i can't find that book and i can't read chinese :D i'll just stick with what others did and use my experience
It is possible to make that plasma flame with out vacum tube ?
Yes,using mosfets th-cam.com/video/qvRzZcaQ32Y/w-d-xo.html
Thanks
@@uecmitsuimarinedieselengin873 thank
What's the reason I can only use a tube here. Can I use a mosfet?
This is a very old video and at that time I do not know quite a lot about RF 😹 so I was using a tube since it is more robust. Later I used FETs in such a circuit, for example this one: th-cam.com/video/qvRzZcaQ32Y/w-d-xo.htmlsi=XZeL37sf6qMo2Ayn
@@uecmitsuimarinedieselengin873 I'm brand new to building electronics but I have studied Tesla all my life and others. I hope I can learn from you. You are very smart. I'm studying crystal radio with only mosfet/s diodes, caps, inductor air coils. Nothing else. I want to use Earth current (pristine ground to Earth) to excite it's electronic particles/field into the receiver circuit. This is why crystal radio need to be grounded to use earth current as cathode or a source of electrons.
We have wireless electricity. I want a group of friendly inventors with integrity to work together.
You can use a mosfet, but they're more fragile. They work great though!
Please be careful with that transformer, that thing could kill you
I think anyone smart enough to build an HFVTTC knows the dangers involved...
@@Tal__
With a microwave transformer, a safety reminder certainly won't hurt.
It never hurts to remind someone not to die.
3:00 Dla bezpieczeństwa radzę odpinać układ z gniazdka przełączniki w przedłużaczą często są jedno stykowe i niekoniecznie jest to faza
Plz be careful dude.. Take care
👍
😮
thats a very scary tesla coil, i purposely avoid using microwave transformers because they are so sketchy.
Exactly.That's why I'm building some switching high voltage power supply now😂🤔🤗.