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- Posts: 1478
- Joined: Fri Feb 03, 2012 9:56 am
- Location: Gorleston-On-Sea, Norfolk
A friend of mine sent me a load of pictures of radios she and her dad have in their loft, she also sent me a picture of this massive valve on display in their house!
Whatcha' think it is? Im guessing TV Transmission Valve in the power circuit??
Apparently it was used for mri scans or normally operates submerged in a tank of oil for cooling and insulation.
- Posts: 224
- Joined: Fri Jul 13, 2012 4:39 pm
- Location: Dorset
Could be this one manufactured by Thales!
Link points to an adobe pdf data sheet.http://lampes-et-tubes.info/tt/TH5184.pdf
Heater power alone is roughly 130W with a peak cathode current of 5 Amps.
- Posts: 98
- Joined: Sun Oct 14, 2012 11:33 pm
Wow! What a beauty.
Used in Gulliver's Travels?
- Posts: 2516
- Joined: Sun Jun 10, 2012 7:23 pm
- Location: Basildon
Wow, hook it up to an industrial microwave transformer PSU and make a nice class A amp, and see if it will irradiate the neighbourhood.
- Posts: 761
- Joined: Sat Jan 07, 2012 10:21 am
- Location: Sleaford lincs
Nice one Mike. ; ) pity she doesn't have a pair. Looks to be about a foot to 18" tall going by the CD rom case bottom right. What an amazing bit of engineering.
- Posts: 294
- Joined: Mon Apr 23, 2012 6:42 pm
- Location: Witney, Oxon
I doubt that's been anywhere near an MRI scanner- from the datasheet it looks more like it was used to control the EHT supply to an X-ray tube, so a CT scanner would be more likely. TBH I don't think valves have ever featured in MRI scanners, even in the RF transmit role- by the time MRI was invented, solid state RF was well up to the job.
I doubt it would be any use at UHF either; it might do as an audio bottle, though it's rather large for its 1KW average anode dissipation rating compared with say four 4CX250s or a couple of 3-500Zs.
- Posts: 699
- Joined: Sun Sep 04, 2011 9:23 am
- Location: Exeter and Poole
Yes in terms of anode dissipation it looks kinda small compared to my favored doorstop the the QY5-3000A http://www.radiomuseum.org/tubes/tube_qy5-3000a.html
Used for 405 transmitters the 3 examples i still have came from Carradon in the early 1970's
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