Making a type C triode vacuum tube.
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- เผยแพร่เมื่อ 16 มี.ค. 2012
- Captain H. Round of the British Marconi Co. designed the type C tube in about 1913. It is a triode that was meant for high gain high frequency use. No examples of the tube were available so some estimation was used in making the tube.
- วิทยาศาสตร์และเทคโนโลยี
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Hello!
I have done it! I built a replica of Marconi's "short range radio transmitter-receiver" which is pictured in books. Fun thing to do!
ron
Seu conhecimento e habilidade é imprecionante, é um trabalho muito interessante.
Ahhh! A not obvious question! The ONLY reason I put the contacts on the side of the tube is because this is a replica of the type C triode! The original had the contacts on the side, so to make the replica accurate I had to do it. It is a much more difficult task than bringing them out through the bottom! Back in the early days common sense apparently didn't have much importance! The old tube designs were full of difficult to manufacture configurations.
I still have a lot to learn about glass blowing. The very nice equipment, namely the lathe, makes it possible for a relatively inexperienced amateur like me to really do some fine work. Without these great tools I would be lost! With tools like I have you can make tubes in a few months of practice. Freehand, consider several years of practice.
ron
I love this imaginative use of a lathe.
Hello!
Tungsten is the only pure metal that has an expansion close to pyrex. (borosilicate glass) The tungsten has to be heavily oxidized for the seal to work properly. It is the oxide layer between the tungsten and the glass that takes up the difference in expansion. Fluorescent lamps are made of soft glass and use dumet seal wire. This is completely different from the seals made in borosilicate glass. Dumet has an expansion that is close to that of soda lime glass so the seal is easy to make.
Hi, to oxidise the tungsten wire, we heat it up and let it cool rite?
Thanks for sharing the know how.
@@philips170t Heat it orange hot for a few seconds and that is that! Only heat the area where the seal is to be made so you don't make the wire brittle.
Who could dislike this? This is literally the only place that you can learn this stuff. I'm watching this because I'm going to be making some gas discharge lamps just for fun soon.
As a young kid I used to be able to watch the Men repair television and radio's in a nearby repair shop my Dad delivered mail on his route. They would let me scrap parts and salvage chassis and sometimes punch holes in a chassis for mounting a tube socket. I had so much enjoyment in those times. In the early 1970's integrated circuits became the rage and led to a throw away society of electronics. I just bought the full year of Popular Electronics 1956 on Ebay, the wonder never grew out of me.
@nineball26 Some Boomer just died (last 2 weeks) with well over a million tubes. He had a warehouse the size of a home depot full of tubes. His family wants nothing to do with it. Who knows what will happen to all these tubes.
Awesome. I’ve been an electronics tech since the 70’s, tubes to the most advanced we have today and I appreciate you putting this out more than I can say.
Hello!
The wire diameter and length determines the filament voltage. There is a certain practical length for each tube design so the diameter will be the most significant factor. I have a lot of different diameters so I can make voltages from under 2 volts to about 12 volts. 5 volts is a common voltage that is easy to find transformers for so I use it most.
Thank you for sharing your skills and methods down to younger generations. Through your video, you will live forever!
This video transported me to 1913 when the electronics were in the beginning and the radio engineering was an wonderful and strange thing.
In those times, it was possible to do an entire equipment at home. Today with the microtechnology, making an equipment at home is quite impossible.
Thanks for sharing this wonder.
Great video cut off too soon though.
A stunning display of craftsmanship, reminds me of Engels Coach Shop. "I just machined this scrap of conduit to a 10/1000" wall". Sure, I do that every day. His understanding of this obscure tech is nothing short of astonishing.
Hello!
Yes, the oxide is very important in the seal. The oxide seals perfectly to pyrex and also seals perfectly to tungsten, its parent metal.
Actually, there are a few around in private collections and in some museums. But for the ordinary person, they are extinct. Good photos are in the book, "Saga of the Vacuum Tube"
Sir, you are amazing. This is awe-inspiring.
aint this the best viewing?? such an involved, master task.
have him make you some tubes and make a fancy guitar amp 1 of a kind
@@codpug That would be great hey!
And PRICELESS! you cant put a valu on that.
Its like ART,....no,it IS ART! for sure.
What a knowledge!
This is a beautiful process. Truly an art as well as the high tech of its day.
Thank you very much for documenting the process!
One of the retired professors of theoretical physics at Goettingen once told me he would have liked to go into experimental physics in the mid 1950s but he could not, because he "had no hand for glass-blowing", so he became a theoretician instead.
Beautiful!
This is truly an art form, I was glad to see that you included in it's typical application. This being very old tech, and I'm loving seeing it again.
I've only just come across this, amazing. These skills are a lost art. Its fantastic to have this youtube heritage for the younger generation who don't yet know they might be fascinated in this stuff.
I don't know why you call yourself an amateur...you are a seasoned and knowledgeable professional.....the price of tubes nowadays makes this a very viable business.
I was in TV service for 38 yrs and I started in late 70's just as tubes were becoming obsolete....I wish I saved all my tubes. Had literally a few hundred of them...
If only I knew then..!!!!
You did good to get rid of them while you could get some cash! Now they are almost worthless, few cents each except for the few specials that audio people use. Those can bring some bucks but that is only a small fraction of the total.
I was amazed to see you making vacuum tubes and McGyvering antique parts. I used to watch my Dad fix old radios and TV's back in the early 50's. Mention of signal tracing, push-pull amps, audio transformers and replacing electrolytic filter capacitors brought back memories. I have forgotten how to replace and adjust guns onpicture tubes and common vacuum tube types and numbers. As a kid I saved allowance money and built two-tube and simple transistor AM radios. Remember the "Man from Mars" radio helmet? I put the guts into a small walkie-talkie box with an earphone on the front and whip antenna ( first kid on the block with a "walk-man" )
Thank you for the video. You remind me of my dad. He used to make complicated laboratory glassware and repair HV radio transmitter tubes using this lathe.
Human 10, industrial Robot 0. One of the best videos I have watched on TH-cam.
Because instead of doing it in 1 minute so it is economicaly viable you do it by hand... Robots win every time, just need the right kind for the job
dear sir, thank you very much for sharing your great knowledge and experience.
No no, there was no boring to watch your entire video..
If there was ever something worthy of HD video, this is it! Thank You for sharing this with all of us!
Interesting how you do this- I'm retired now, but worked in aero space for years , It was nice to have vacuum ovens, etc. You've come up with many ingenious techniques, you're very talented- It proves people can make their own stuff, whatever it may be- when I started out in tool and die, we always made our own stuff, and improvised- Anyway, Good Vids!
Wow! A lost art. Glad to see this kind of workmanship still exists on some level. Very interesting stuff!
I have not made light bulbe.(they are so cheap at walmart!:) The glass from lightbulbs and other old tubes is extremely brittle and is soft glass so it is much harder to use than pyrex. The extremely critical annealing makes it hard to get a good tube cooled off.
Just amazing stuff and I think I missed the era for getting a(ny) crafmanship doing arts. Very, very happy to see this highly skilled person in action. Well done !!!!
My congratulations, incredible! This is a magnificent art that fewer and fewer people in today's world will possess such knowledge.
Outstanding, sir! Thank you for sharing this with us, it would be a shame to see this knowledge forgotten.
I agree, one of the best instructional videos on TH-cam.
EXCELLENT !!! I'd like to HEAR that tube at work.
Hello!
It is all a matter of money! Uranium glass is over 20 times as expensive as 7740 pyrex. I just can't afford it. The 7740 seals just fine by the way.
I'll bet Rocket Scientists get amazed watching this guy. Completely amazing!
You, Sir, have a rare and special talent! It was a joy to watch.
Brilliant stuff.
I was...many years ago, a "pre seal engineer" in a company that manufactured light bulbs (fascinating machinary) but to see a triode hand made is just stunning.
I learned a great dael from your video....thanks for sharing.
C
Amazing! Enjoyed it very much! True craftsmanship!
wow I am impressed by your patience and skill.
Amazing! I now want to finish building my equipment that is needed and build my own tubes. The plate was the critical part that I was wondering how to make and you solved that so easily! Thank you!
@Marko: In every radio or amplifier tube/valve there is at least a cathode and a plate. In the case of the triode, there is that cathode, the grid, and the plate. The cathode is the emitter, the grid is the base control, and the plate is the collector.
You make this look easy...What incredible skill you have! Love you and your videos! More please!
Hello!
I got it at a junk swap meet. I have no idea on where it was first used. It was some kind of industrial production equipment. A lucky find!
ron
Very much respect! Modern day renaissance man
The fact that the tube is actually being use is amazing, honestly wasn’t expecting the tube to be used in something till I seen the end. I’ve have learned a lot these past few days I’ve always loved old radios and tubes just something about it and the simplicity as well !
What a privileged to watch a master craftsman at work. I build and repair vacuum tube guitar amplifiers. I will never look at a vacuum tube the same way again!
You sir have the patience of Job!
I hope you make a lot of these videos to pass on your rare skills that should not be forgotten.
Great video!
I hope that you have an apprentice to pass on your amazing skill to.
Nobody teaches what you know.
This cannot be done without the right machines, equipment and tools.
1959Berre he just made that tube with scavenged parts
@@1959BerreIn fact no rare tools spotted here, only a couple of blowtorches, a lathe and a spot welder - and some generic household things. The other slightly rare device is a vacuum pump (though it can be easily obtained). So - no reason not to learn how to make the good things ;)
@@TheBypasser You do realize once the buzz wears off and you remember your retarded comment that you can always come back and delete it so others don't spot your brain deficiency right? Vacuum pumps are rare?
@@TheBypasser idk about you but I don't happen to have oxyacetaline torches, lathes, high vacuum pumps, titanium and barium electrodes, and vacuum testing equipment in my garage lol
I can't believe what I am seeing..... Amazing! It would take me a lifetime to develop the skills to do this.
A lot of skill, patience and good eyesight needed for this
One of the best videos on TH-cam. Such gold information! Well done
You totally explain how a vacuum tube made. Good job!
Also very often they would take leads out the top or even the sides to reduce the capacitance between electrodes.
I am here after BitHead1000 recommended this channel in one of his latest videos. Very interesting. 👍
This is so so awesome!! Imagine being able to make your own tubes. Mindblowing to a tube freak like myself. Respect to you sir!!
Just rewatched this now. You are amazing! What you can do is beyond describable! I hope you are OK and I hope to see more videos soon!
Simply beautiful craftsmanship!-John in Texas
I am doing a video on the radio that goes into. I just got the valve out and tested it to make sure it is still good. YES! Coming up later this year. (2021)
You are one very clever guy! Congratulations to you. We need your knowledge spread to younger generations so we have some guys left to fix our tube gear:)
glasslinger, You are amazing, the work you are capable of, just blows my mine. very intelligent man. nothing like the old technology.
Fascinating to watch the tube construction process, and your reconstructed Marconi transmitter is a wonder to behold; absolutely gorgeous.
I love watching these videos. Even back in the day the tubes took almost as much then as it takes to cast a die for an integrated circuit does today. The only exception is the making of IC's needs extreme cleanliness. But other than that - it's essentially taking silicon glass and overlaying dopants, etc. on it.
You are truly an amazing craftsman! Thank you for illustrating and passing along to future generations an art that is in short supply.
I was lucky enough to get a CCTV camera maintenance contract with Phillips lighting Co.'s Little Rock AR incandescent light bulb plant backing the late 80s. Spent many hours all over the actual facility and campus
I was amazed at how many steps it took to produce bulbs they could make in a day with at that time "antique" machinery...
It had been there since pre WWII.
Your process is an art, and a damn cool one at that. Amazing.
Thanks so much for making the videos. Love watching you build amazing things.
That is some specialised work there. Kudos to you for doing this!
Some of the most skillful, practical work I've seen on TH-cam, a truly knowledgable technician & technologist
I'm absolutely amazed by your skill! You make it look so easy!
You, sir, are a master at your craft! I enjoyed watching the entire video. Thank you!
Great video! This video brings me back to my childhood where I used to build vacuum tube radio transmitter/receiver !
It was magic and only a thing in the books and museums until you demonstrated it.
I'm teaching myself the fundamentals of shortwave tube radio repair. I find this an amazing precursor to what I'm learning. Thanks for taking the time!
Thanks for the speedy and informative reply!
I'm looking forward to your future posts, have seen all on you channel now and they really are some of the most informative DIY videos I've seen.
You are amazing!! What an incredible job. Thank you so much for showing us this process.
What a fascinating video!
It’s rare to see workmanship like this any more. Thank you for posting these videos of a nearly lost art … I’m watching them all :)
wow, I always wondered how tubes were made until now but I am almost certain that in mass tube production there are machines that do that as well. great job
Your craftsmanship is an inspiration!
_What you do is perfection. I can only say BRAVO._
I have watch your videos you are amazing and your knowledge of old time electronics is astounding you are a human marvel
I didnt know that is posible to make a vacum tube out of factory. This is art.
Fantastic painstaking work, thank you for sharing
You have some serious skills . I have watched a few of your videos . I have picked up a few tips . Thanks for taking the time to make these very helpful videos .
Great to see you can now post videos greater than fifteen minutes. I will soon be making my own vacuum tubes....thanks for the inspiration !!
You Sir definitively have really nice toys. Thanks.
I know very little about tubes, but i really enjoyed watching the amazing craftsmanship!
I wish I could make my own vacuum tubes, very cool stuff.
An example of true craftsmanship which was fascinating to watch.
You must be 1 in 100,000,000 in this talent!
Still very cool to see these things made. Mind boggling how they managed to invent this tech in the first case.
Ron, thank you so much for taking the time and energy to make these important documentaries and share them with the world.
I hope it is okay to offer a suggestion, and also ask a quick question.
If you put your camera in manual focus, place your hand or an object with a contrasty pattern the distance from the camera to where you will be working (camera to subject distance), and center it in the viewfinder, you can press the "autofocus" button which most cameras have to momentarily activate the auto function.
This will leave the camera in manual, locked at the focus plane you set up with your test subject.
No more focus drift, hunting, or incorrect focal plane selection.
So, my question
Really great video. Thanks for posting it...Absolutely amazing, and I used to work in a scientific glass shop..!
14:14 the invention of vacuum tubes was one of the greatest feat De Forest have contributed to man
Glassinger! We need more of your excellent videos
Blown away man!. Nothing as impressive as a homemade Tube. Amazing.
That was a great video, and you are one heck of a craftsman!
It's amazing how you can build such a device from scratch, from speculation.
And this tube will still be working after all the silicon devices we use today have fried and died. What the world needs to do, is to keep these skills alive and up to date, because one day, perhaps not in our lifetimes, they may well be needed again.
Sir, you are a craftsman, and an inspiration. I thank you for such a wonderful video.
You are a good collor full role model and i learning mutch. Sorry my terrable bad english. Greetings from Norway
Awesome! It nailed me to the screen from start to finish. I can't help but wonder how many years it took to
a) Acquire the knowledge
b) Acquire the almost superhuman skills necessary to put that knowledge into practice.
Wauw!
what a craftmanship!
RESPECT!
I wish i had that kind of tools and knowledge,CHAPPO! Love your videos,greets/greens,the Netherlands.
Absolutely fascinating.
I was looking at some old tube amps, cause i'm playing my guitar with an old 225/a geloso, and i saw your video.
I have to say that i am not a techinician, but watching you doing this job it's pure art!
Thanks for demonstrating the art and science.../ fascinating!
Gasslinger .... This is absolute the top of craftsmanship I'd ever seen....