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 New tubes in DIL package
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 Return to top of page · Post #: 1 · Written at 1:31:04 PM on 31 January 2015.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 895

Hi Guys,
I just saw this link on Facebook, spotted by Chris I think (who is a member here).

http://www.synthtopia.com/content/2015/01/29/korg-noritake-introduce-futuristic-nutube-vacuum-tubes.

It looks to be a stereo preamp the likes of 12AX7.
Cheers, Brek.

edit,,, I tried to [url][/url] the link Brad, but it appears as more text.


 
 Return to top of page · Post #: 2 · Written at 2:37:43 PM on 31 January 2015.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6574

The URL tags don't work here - to help thwart spammers. Instead there is a script I run that will detect text links and convert them automatically. I can also press a button to run it manually if needed. Job done. Smile

I was about to say that the guts in those chips look like the fluorescent displays found in old calculators though the site does confirm it.


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A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 3 · Written at 2:57:47 PM on 31 January 2015.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 895

Noretake make VFDs, so no stranger to sucking atmosphere out of rectangular glass envelopes.
It’s my feeling that most folk here would have an aversion to these, but not to say a company
shouldn’t do it to take advantage of what would be a new market for current products.


 
 Return to top of page · Post #: 4 · Written at 3:07:56 PM on 31 January 2015.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6574

Personally, I am not against it and don't know why anyone would be though it's like anything. Some will like it and others won't. It's probably a little strange though but who knows, there may be a benefit to it all.

Most Russian space hardware still uses valves here and there and they may benefit in some way. The world relies on the Russians to transport people to and from the space station at the moment and any valve-equipped gear they use may benefit from further miniaturisation.

I wonder if these devices will make their way into a future 'Currawong' kit amplifier...


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A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 5 · Written at 6:32:07 AM on 1 February 2015.
Wa2ise's avatar
 Location: Oradell, US
 Member since 2 April 2010
 Member #: 643
 Postcount: 774

You can trick a VFD into being a signal level amplifier, similar to a triode tube using a directly heated cathode filament. In normal use, as far as I can figure out, the grid is pushed positive in relation to the cathode to cause a florescent painted plate to glow with electrons hitting it. As an amplifier, we'd want to keep the grid in the negative voltage area. To get the plate current up, you'd increase the plate voltage to something like 120VDC. Which should make the VFD act more like a triode tube. This is for small signal amplification, not output to drive a speaker level power. The main application for this would be in audio preamp stages, to add some 2nd harmonic distortion, which is said to add a pleasing effect to music, sometimes called "warmth".


 
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