I love vacuum tubes/valves. I wish England would start making them again. Especially the EL34 and ECC83.

@maxjakobsen5526

8 күн бұрын

And GEC KT88 - KT66.

That is some amazing precision workmanship for the period, and so much of it by hand. You can imagine how much better we've gotten in the 55 years since this was made. The tiny copper honeycomb for the klystrons was particularly ingenious.

I work at a particle accelerator and we still use tubes for a lot of things. Klystron tubes provide power to the beam and accelerate electrons to almost the speed of light. They've been working on replacing these dinosaurs for years, but solid state amplifiers still have problems producing the high voltage/high power needed.

@ComputerHistoryArchivesProject

Жыл бұрын

Hi Gary, fascinating! The still have high tech uses in many fields. Thank you for the feedback!

@VoidHalo

Жыл бұрын

Heck, klystrons are so ubiquitous in RF applications. I'm no RF engineer, but it seems they're especially prevelant anywhere radar is involved. Presumably they can generate high power microwaves in a manner somehow better suited for the application than magnetrons would be. Though I'm not sure why... yet. But I agree 100% about semiconductor based technologies for generating microwaves. Every method I've looked into using semiconductors, ie tunnel diodes, seemed to have output powers in the milliwatt range. But that didn't stop me from buying a 10 pack of surplus soviet tunnel diodes for $20 total, not each. =D Sorry if I'm a bit overenthusiastic. I don't have many opporutinities to talk shop with others about electronics/rf so it's hard not to rant on and on about it if given the chance hehe.

@marekkowalski6767

Жыл бұрын

@@VoidHalo 👍🇵🇱

@tinytonymaloney7832

Жыл бұрын

I remember building Klystron power supplies from scratch when I worked at Marconi Radar in the early 80s. Dozen at a time, weighed a ton, full of transformers. Wonder how different they would be now, lighter perhaps with more electronics?

@lilblackduc7312

Жыл бұрын

Great comments all around! Thank you...🇺🇸 😎👍☕

I worked at EEV in Chelmsford in the early 1980's. A wonderful place to work with so many skilled staff and interesting tube manufacturing going on. The 'peace dividend' and advances in semiconductors meant that the market for military and broadcast tubes was getting smaller. When I left in the latter 1980's they were embracing semiconductor technologies and tube manufacturing was reducing.

@ComputerHistoryArchivesProject

Жыл бұрын

Hi John, sounds like it was quite a fascinating experience! ~ VK

this is so important, children today must see this

Those days when there was pride in high quality products made in the USA.

"It's EEV, not EEVBlog!" Love this film, a nice glimpse on the professional use tubes you don't come across that often. Most of them went out of use a long time ago, some are still indispensable today.

I love the subtle yet perceptible negative inflection on "...colour television..."

These old films are just marvelous. In many ways better than modern ones, especially American ones. The artistry, the subtle humor, it's just great.

@ComputerHistoryArchivesProject

7 ай бұрын

Hi @Shinkajo, I have to agree on that! Thank you for your feedback on this one. ~ Victor, at CHAP

Enjoying your contents on this channel. Thanks for preserving and sharing these videos, so fascinating to see the past technologies

@ComputerHistoryArchivesProject

Жыл бұрын

Hi Kevinkun, thank you for the great feedback. Glad you found our channel too! ~ VK

Thank you for uploading this nice historical documentation.

@ComputerHistoryArchivesProject

Жыл бұрын

You are very welcome!

Great to see the image orthicon tube being awarded an Emmy! IIRC "Emmy" is in fact a corruption of the slang term "Immy" for the image orthicon tube.

@ComputerHistoryArchivesProject

Жыл бұрын

Hi NipkowDisk, thanks for the etymology of "Emmy". Did not know that! A fascinating bit of television history! ~ Victor

@stuartirwin3779

Жыл бұрын

I think you are wrong. Emmy is from Emitron, a version of the Iconoscope developed by the EMI company.

@toresbe

Жыл бұрын

​@@stuartirwin3779 I'm pretty sure that's not the case. The Emitron was primarily a UK trademark. They would have been known as Iconoscopes in the US, where RCA manufactured them. Besides, the first Emmy was awarded in 1949, by which time iconocopes were entirely obsolete and the immy ruled supreme :)

@stuartirwin3779

Жыл бұрын

@@toresbe You are quite right. I stand corrected. ☺

@toresbe

Жыл бұрын

@@stuartirwin3779 Well it was a fun bit of research figuring out why that felt wrong to me :)

Use to maintain thermal imaging cameras or TIC's made by EEV. The pickup tube was called the "Pevicon" Was quite sensitive to slight temperature changes. Used for an aid for firefighters.

@christopherleubner6633

Жыл бұрын

Yup I remember those pyroelectric vidicon cameras. For their time they were extremely useful. 🤓

Iam still using murphy minx valve radio!

That was brilliant. Thank you.

Love these films,Thank you.

And there it was all gone, the good old days of good quality British precision engineering. No more. Its all cheaply made in China or Taiwan. Good trip down memory lane though, 👍

Интересно, жгуче интересно о американской электронике 60х. Спасибо ! Жалко, что я родился слишком поздно в 1976м ! (! Привет Эдвину Армстронгу !

That was edutaining! Has anyone got the full datasheets for an EEV PX2696 / P8041 two inch diameter Image Isocon tube? I have one in my collection and it would be fun to build another video camera around this tube. It probably came from a decommissioned medical X-Ray machine. I'll bet it has plenty of life left in it. These two inch imagers are significantly smaller than their Image Orthicon cousins which came in 3 inch and 4.5 inch models. The difference in the two types, orthicon vs isocon, is in which electrons are resampled in the return beam. Isocons work great in low light but would be blinded completely if someone lit a candle in the same room. Orthicons work over a greater range of lighter, all be it with a lower signal to noise ration.

Best video vacum tube electronics🙏🙏♥️♥️

PLEASE JOIN US in Preserving Vintage Computer and Technology History with a small contribution to our channel. www.paypal.com/donate/?hosted_button_id=LCNS584PPN28E Your contribution greatly helps us continue to bring you educational, historical, vintage computing topics. Thank you! ~ Computer History Archives Project

Thank you for this one! 🇺🇸 😎👍☕

EEV made some truly nice transmitter tetrodes and photomultipliers 🤓❤

@ComputerHistoryArchivesProject

Жыл бұрын

Yes, indeed!

Back in the day when Great Britain was still great. Fortunately, we've now squandered our technological advantage and our economy with it.

I wonder whether Oliver Postgate, one of the creators of "The Clangers", saw this film at 17.37 and said, "Ha!"

@museonfilm8919

Жыл бұрын

Funny that - I half expected a Soup Dragon to pop up!!

Driver looked like Michael Palin

Mien Gott a large portion on the way to an atomic bomb was produced at EEV in 68.

Tubes are still used in guitar amplifiers because of the rich sound and overdrive. After playing quality tubes in my amp for 3 years (now they are $150 each), I have Tried again the original tubes ($15 tube) With low market tubes, I lose something like 50% of my sound quality.

@dingalarm

Жыл бұрын

If tubes continue to be as ridiculously expensive as they are now, I doubt tube guitar amplifiers will be around for much longer 🙁

@Gorilla.Guitar

Жыл бұрын

@@dingalarm not as long as there are idiots like myself willing to pay outlandish prices for tone..

@nobodynoone2500

Жыл бұрын

Although the tubes add harmonic distortion, It's mostly the transformer stages that give it the "tube sound".

All these jobs that were done "in house" (i.e. Western nations), all gone to China (with some to Russia), how sad the loss of manufacturing, in the days when people actually "dressed" to go to work - I know, I did/do. May God help us all, Ciao, L (American Veteran)

" Vaccume Tube to Color Retriving Tube "

Fleming Valves

semiconductor technology.brought the end of vacuum tubes

@nobodynoone2500

Жыл бұрын

They are still used (and superior to solid-state) in hundreds of applications. It was just the end of mass-production devices. MOSFETs and Diodes are just more efficient and cheaper for simple low-bandwidth applications like audio amplifiers.

Sorry, if they were made in England they would be VALVES not vacuum tubers.

@ComputerHistoryArchivesProject

Жыл бұрын

If the British call vacuum tubes "valves" did you ever wonder what they call Valves? I do.

@soloperformer5598

Жыл бұрын

@@ComputerHistoryArchivesProject They call them VALVES.

@goodun2974

Жыл бұрын

@@ComputerHistoryArchivesProject , Adrian Legg, fantastic one-of-a-kind guitar player from Great Britain,, calls them tubes, not valves; apparently, the term "valves" isn't quite universal.

@ComputerHistoryArchivesProject

Жыл бұрын

Yes, "Valves" is what the British called tubes, but most people use the term "tubes." The British love to have different words for many things. They call the underground subway a "tube", trucks are "lorries", a toilet is called a "loo", and many more. Fascinating, but you have to be an etymologist to figure out why. LOL

@soloperformer5598

Жыл бұрын

@@ComputerHistoryArchivesProject The British had the word for many thigs before they were ruined by Americans. Surprising really that America should deviate so far from English as the country is less than 250 years old.