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Old 4th April 2008, 12:40 AM   #1
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Default 5718 subminiture tube?

Is the 5718 tube good for anything or should I throw it in the trash?
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Old 4th April 2008, 12:57 AM   #2
Sheldon is offline Sheldon  United States
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Fairly nice plate curves. Could be used as a preamp tube, or even a little PP headphone amp.

Sheldon
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Old 4th April 2008, 01:30 AM   #3
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I have a few hundred of them, so sooner or later I will find something to do with them. They can be stuffed into an 8 pin round (to-5 style) op-amp IC socket so that you can change tubes.
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Old 4th April 2008, 06:50 AM   #4
coresta is offline coresta  France
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the brother is the 5719 , high mu (70) ... i have many too! would you play a swap George ?
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Old 4th April 2008, 01:18 PM   #5
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Quote:
the brother is the 5719 , high mu (70) ... i have many too! would you play a swap George ?
Maybe. I an thinking about building a vacuum tube guitar preamp right into the guitar, so a high mu tube may be useful. I have a box with about 500 assorted sub mini tubes I will check what is in the box when I get home. I know that there are some pentodes, and dual triodes but I don't remember any numbers right now.
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Old 4th April 2008, 02:23 PM   #6
JoshK is offline JoshK  Canada
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I was thinking that submini's would make nice tubes for phono preamps and output stages of CD players.
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Old 4th April 2008, 04:46 PM   #7
coresta is offline coresta  France
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have some on e.b. for sale under # 250231095718
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Old 4th April 2008, 05:49 PM   #8
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Scroll down to 5718
http://www.machmat.com/sales/2-5.htm
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Old 4th April 2008, 05:58 PM   #9
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Its used here.


A Rapid Scanning Spectrometer for Oscillographic Presentation in ...
cell. The cathode follower employs a Sylvania 5718. subminiature triode and is shown in Fig. B. The. intermediate amplifier is shown in Fig. 5C and is made ...
http://www.opticsinfobase.org/viewme...id=50074&seq=0

http://ephysics.fileave.com/spectros...Rspec-5718.pdf
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Old 4th April 2008, 06:49 PM   #10
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Subminiature tubes are discussed in this book. Click the links in Contents to get to the pages on miniaturization and subminiature tubes.

Advances in Electronics, Vol. III L. MARTON,
http://books.google.com/books?id=PHx...ZdgQ#PPA184,M1
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