Thursday, October 19, 2006

Vacuum tubes

These are vacuum tube, or valve and were used in radio till 60'. Still now a shop in Akihabara, one of the major shopping spots in Tokyo, is dealing in them. I have seen the real vacuum tube for the first time and they are as big as 350ml can.


At 5:29 PM, Blogger Zsolt72 said...

what are these vacuum tubes for? I never seen them before:)

At 7:31 PM, Blogger Jing said... big ones!
once i only saw some which were used in the radios.
and same question here, what are they for??? so big....never saw such ones before too...

have a nice weekend...

At 1:42 AM, Blogger macky said...

zsolt72, jing: thanks for your comments. Some papers says that they are still now used in some big amplifier and some medical appliance... But I don't know exactly. Anyway, I think that these are the great ruins of the 20th century.

At 4:12 AM, Blogger Curly said...

Ah tubes, valves, tetrodes, I used to make use of these when I was a radio ham, I used to make my own transmitters and amplifiers. Couldn't beat them for raw power, better than most transistors, and cheap too!

Curly's Photoshop


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