NASA going back to tubes?

STURMJ · 3468

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Offline STURMJ

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on: May 25, 2012, 06:38:38 AM
I saw this yesterday, thought you guys would find it interesting.
http://news.sciencemag.org/sciencenow/2012/05/return-of-the-vacuum-tube.html



Offline Mr. Davis

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Reply #1 on: May 25, 2012, 08:00:38 AM
Very interesting news story.  Thanks for sharing. 

I would like to see nano vacuum tubes in my gaming machine!   A hard drive that is 10x faster..  ;D

Perry Davis


Offline Grainger49

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Reply #2 on: May 25, 2012, 08:55:57 AM
The terminology fits FETs.  Still, interesting read.

Thanks!



Offline John Roman

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Reply #3 on: May 25, 2012, 02:14:44 PM
Yet another bookmark, interesting site.
Regards,
John

Regards,
John
Extended Foreplay 3 / 300B Paramount's / BassZilla open baffle/ Music Streamer 2 / Lenovo Y560-Win7-JRMC & JPlay


Offline Chris

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Reply #4 on: September 17, 2012, 05:44:16 AM
Not sure i would be inclined to believe the soviet tube/EMP explanation.. it sounds great yes, like they were really on top of things, however, from subs sinking to chernobyl, to the ripped off plans and inferior execution of the concordsky as well as most sukhoi and migs, post 1965, looking quite similar to our designs from years before and last but not least , their VAST , VAST missile arsenal that i was told as a kid, they had, (which was just not true at all) all adds up to the fact they had no money and IMO, lacked the capacity to develop state of the art, like the free enterprise west was able to.... good example, broken down "poor" east germany versus the thriving west germany... ONLY  my observation, i dont want to cause an argument....i think the emp resistance , which is true, is just an accidental bonus for their continued use of what technology they had that still seemed to work for them and didnt cost additional funds for a whole bunch of new R&D that they were not capable of acheiving given their "closed doors"...... my totally uneducated 2 cents...
« Last Edit: September 17, 2012, 05:47:22 AM by Chris »



Offline Grainger49

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Reply #5 on: September 17, 2012, 06:11:27 AM
I throw in with Chris.  I had always heard that the USSR semiconductors were not up to snuff and therefore they stayed with rugged tubes.  I also heard that they didn't know about the advantage of tubes over the P-N junction in the event of an EMP.



Offline Doc B.

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Reply #6 on: September 17, 2012, 06:29:41 AM
I was in a room about 30 years ago where there was a cruise missile hanging from a crane with a bunch of equipment attached. The room was lined with microwave absorbent material. out of one side of the room was a waveguide, that went back to a chamber with a 1cm^2 piece of foil. It was hit with the discharge from a cap the size of a couple of phone booths. I was told that when it vaporized it sent a s**t ton of EMP into the room. So it appears that at least from our end there was a serious concern about EMP resistance.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline Grainger49

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Reply #7 on: September 17, 2012, 06:44:40 AM
Hmmm, I like that.  And now a new engineering unit, s**t ton!  I'd like to use that with permission.



Offline 2wo

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Reply #8 on: September 17, 2012, 09:11:32 AM
Its metric for S**t Load   8)...John

John S.


Offline Jim R.

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Reply #9 on: September 18, 2012, 03:43:19 PM
I used to work for a watchdog/thinktank agency for the US electric utility grid and we had one of the country's foremost EMP experts on staff... it is very real and if somebody could make a pure EMP bomb that did not do any physical destruction, it would bring any modern country to it's knees in seconds -- meaning those who depend on electricity and electronic communications.  I was doing frequency coordination for the communications system that was supposed to work after that EMP thing happened, but that was a military program that has long since been scrubbed.

--Jim


Jim Rebman -- recovering audiophile

Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).

s.e.x. 2.1 under construction.  Want list: Stereomour II

All ICs homemade (speaker and power next)


Offline Doc B.

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Reply #10 on: September 18, 2012, 07:19:34 PM
There was a local tube audio friend who, IIRC, was in charge of the Army's supply of tube transmitters and receivers in Iraq back during Desert Storm.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline Chris

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Reply #11 on: September 20, 2012, 06:25:55 AM
Right, and the President's E4 "doomsday" planes are "purposely" old fashioned (if you will) fitted with alot of analog technology for the emp resistance as well... we know it is real....