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Old 20th March 2007, 04:58 PM   #51
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My current love...

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Old 20th March 2007, 05:36 PM   #52
poynton is offline poynton  United Kingdom
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My current love...

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That should be Miss March 2007 in PLAYTOOB



Andy
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Old 20th March 2007, 06:30 PM   #53
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The "Laurel and Hardy" of the tube world:
GU50 and EC52. I thing the GU50 is a beauty but the EC52 is more original and cute than beautiful.

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Old 20th March 2007, 06:52 PM   #54
radtech is offline radtech  United States
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You can't beat a mercury arc rectifier for that 'frankenstein' factor.



http://www.electricstuff.co.uk/mercarc.html

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Old 20th March 2007, 09:34 PM   #55
Netlist is offline Netlist  Belgium
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This is probably the smallest among tubes:
http://blog.modernmechanix.com/2007/...-hearing-aids/

/Hugo
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Old 20th March 2007, 09:38 PM   #56
poynton is offline poynton  United Kingdom
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Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)
Didn't they burn your ears ??
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Old 21st March 2007, 01:23 AM   #57
Ryssen is offline Ryssen  Sweden
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My current love...
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Whats the hat on top for?
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Old 21st March 2007, 07:26 AM   #58
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The hat??!! To keep the tube from freezing its ears off ...

The tube is to be mounted in a socket with a high collar that has a lid on top. The black "nut" on top of the tube is to help get the tube out of the socket and is screwed off when it sits in the socket. Guess the metal cap helps protect the tube from the cap and to assure that all tubes have the exactly same height. Remember that this is a HF-tube often used in military equipment.
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Old 21st March 2007, 07:34 AM   #59
Nordic is offline Nordic  South Africa
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Just wait till I visit my mom again....

I have an old tube which looks like it has a 3 prong plug in the top, and the base is this beatifull heatsink... it has served more than 30 years as a doorstop.

Pretty sure its dead though, as my grandfather was a boffin (smart guy) with these things.
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Old 21st March 2007, 01:23 PM   #60
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Quote:
Originally posted by Nordic
Just wait till I visit my mom again....

I have an old tube which looks like it has a 3 prong plug in the top, and the base is this beatifull heatsink... it has served more than 30 years as a doorstop.

Pretty sure its dead though, as my grandfather was a boffin (smart guy) with these things.
Sounds like it may be some sort of magnetron (Radar transmitting pulse generator) tube. Magnetrons are frequently seen with their necessary magnets attached. Without the magnet structure there isn`t all that much to see. Indeed some of those make good doorstops.

Another guess would be a large Klystron, another hi-power RF transmitting type tube.
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