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 Eye, or indicator tubes
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 Return to top of page · Post #: 1 · Written at 4:51:21 PM on 22 June 2010.
STC830's Gravatar
 STC830
 Location: NSW
 Member since 10 June 2010
 Member #: 681
 Postcount: 1301

For those interested in eye tubes, this site is very informative

http://www.magiceyetubes.com/

Graham
 
 Return to top of page · Post #: 2 · Written at 6:33:05 PM on 30 June 2010.
6A8G's Gravatar
 6A8G
 Location: Wellington, NZ
 Member since 24 July 2009
 Member #: 517
 Postcount: 63

This site is kinda cool too: http://www.akh.se/tubes/eyes.htm

Shame they're no longer made


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
6A8G.

 
 Return to top of page · Post #: 3 · Written at 16:50:40 on 19 July 2010.
STC830's Gravatar
 STC830
 Location: NSW
 Member since 10 June 2010
 Member #: 681
 Postcount: 1301

Not a tube but the Shadowgraph tuning indicator by Zenith

http://www.antiqueradio.org/Zenith12A58.htm

and this one by Philco

http://www.magiceyetubes.com/philco05.htm

and a history of tuning indicators

http://www.radiomuseum.org/forum/history_of_tuning_indicators_meters_graphs_magic_eye_led.html

Also the Tunograph, the very first eye tube
http://www.radiomuseum.org/tubes/tube_tunograph.html

------------------

Here is a site describing how to substitute the cheaper 1629 (12v filament) for 6U5 & 6E5 (6V filament) using a voltage doubler circuit.
http://www.nostalgiaair.org/References/Articles/TheFlash/Flash04.htm
 
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