UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > General Vintage Technology > Websites

Notices

Websites Found an interesting website? Post the details here and share it with the rest of us. Please stick to websites that are in some way related to our hobby/interest.

Reply
 
Thread Tools
Old 30th Nov 2022, 11:46 pm   #1
McMurdo
Dekatron
 
McMurdo's Avatar
 
Join Date: Jun 2009
Location: Staffordshire Moorlands, UK.
Posts: 4,925
Default Nice film about English Electric Valves

Nice film on youtube about the former EEV company, lots of TV, radar and transmitter references.

https://youtu.be/Ycr8EJUpKw0
__________________
Kevin

Last edited by Radio Wrangler; 1st Dec 2022 at 7:52 am. Reason: Typo in title - adjacent key hit.
McMurdo is offline   Reply With Quote
Old 2nd Dec 2022, 9:21 am   #2
Andrew Sinclair
Tetrode
 
Join Date: Sep 2007
Location: Fareham, Hampshire, UK.
Posts: 81
Default Re: Nice film about English Electric Valves

Very interesting. Thanks for posting.
Andrew Sinclair is offline   Reply With Quote
Old 3rd Dec 2022, 3:27 am   #3
whiskas
Octode
 
whiskas's Avatar
 
Join Date: Mar 2016
Location: Knutsford, Cheshire, UK.
Posts: 1,181
Default Re: Nice film about English Electric Valves

Very interesting and good quality copy too.
Thanks for the link!
__________________
...where on earth did that spring/screw go??
whiskas is offline   Reply With Quote
Old 3rd Dec 2022, 6:37 am   #4
Craig Sawyers
Dekatron
 
Craig Sawyers's Avatar
 
Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,245
Default Re: Nice film about English Electric Valves

Decades ago, I was developing a large screen projector based on a copper vapour laser.

To keep costs low, I bought an awful laser (developed by a long defunct US company). The pulser was hybrid semiconductor and valve, and the thing that fired the discharge pulse was a hydrogen thyratron that was totally shot. And the idiots who had developed this device powder coated the whole laser body - leaving insulated gaps that gave me a nasty RF burn.

EEV stepped up to the plate, and visited to work out what was needed. They supplied a serious ceramic bodied thyratron that saw that awful laser through until we eventually acquired an Oxford Lasers unit - which was a much more serious affair. It is a mark of this company that they still exist https://www.oxfordlasers.com/

Anyway, that is really a story of the superb service of EEV sometime in the mid 80's. And the quality of Oxford Lasers

Craig
__________________
Doomed for a certain term to walk the night
Craig Sawyers is offline   Reply With Quote
Old 3rd Dec 2022, 7:11 am   #5
Radio Wrangler
Moderator
 
Radio Wrangler's Avatar
 
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 20,871
Default Re: Nice film about English Electric Valves

Some odd pronunciation in that film. The presenter is obviously from a non-technical background, but if so, why wasn't he guided by EEV?

Mik-ro-wave
Dielectic heating - no "r" which gives away that he read a word familiar to him.
Waveguides referred to only as 'pipes'

Microwave cookers were mentioned, so this puts it a bit later than the trade test films of BBC2.

Just wondering who the target audience was.

David
__________________
Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
Radio Wrangler is offline   Reply With Quote
Old 3rd Dec 2022, 9:36 am   #6
Paul_RK
Dekatron
 
Paul_RK's Avatar
 
Join Date: Nov 2003
Location: Fakenham, Norfolk, UK.
Posts: 3,728
Default Re: Nice film about English Electric Valves

Thanks from me too - good after all these years to see something of what was going on mostly at Chelmsford, with a few moments' footage of workers streaming out of the slightly ramshackle-looking EEV Lincoln where I spent my days in the first half of the '80s occupied with the receiving end of various radar systems, chiefly with S- and X-band oscillators and mixers. Our little corner of the operation amounted to four assembly workers, a couple of chaps in the adjoining machine shop, Norman the foreman, and two technicians and me holed up in a screened room engaged in development and testing.

Paul
Paul_RK is online now   Reply With Quote
Old 3rd Dec 2022, 9:51 am   #7
GrimJosef
Dekatron
 
Join Date: Sep 2007
Location: Oxfordshire, UK.
Posts: 4,082
Default Re: Nice film about English Electric Valves

Quote:
Originally Posted by Craig Sawyers View Post
... I was developing a large screen projector based on a copper vapour laser ...

EEV stepped up to the plate, and visited to work out what was needed. They supplied a serious ceramic bodied thyratron that saw that awful laser through until we eventually acquired an Oxford Lasers unit ...
I spent the first year of my PhD research sharing lab space with the chap who was developing what went on to be that Oxford Lasers unit. Its success was critically dependent on the quality of the EEV thyratron. The devices were the best in the world at what they did, not least because of the company's willingness to work with us on hardening them against the abuse they sometimes had to deal with (the laser ran extremely hot so as to produce significant copper vapour pressure over the ceramic boats of liquid copper which sat in the bottom of it, but controlling the temperature with sufficient precision to keep the vapour pressure 'just right' was one of several challenges to the stability of the vapour discharge). Every failed thyratron went back to Essex for an expert post-mortem.

Cheers,

GJ
__________________
http://www.ampregen.com
GrimJosef is offline   Reply With Quote
Reply

Thread Tools



All times are GMT. The time now is 10:29 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.