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Author Topic: Vacuum Transistor?  (Read 4201 times)
W8JX
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« on: July 01, 2014, 09:55:02 AM »

I was scanning news today in my Flipboard App  (that does not run on XP thru 7) on my Win RT tablet. It seems that NASA has developed a vacuum transistor that will operate at up to 460ghz! They did not say what they plan to do with it.
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N6AJR
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« Reply #1 on: July 01, 2014, 09:58:52 AM »

Probably install it in a hoover, or kirby, or an electrolux... Smiley
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AA4PB
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« Reply #2 on: July 01, 2014, 10:04:06 AM »

They could really clean up with a transistor like that  Wink
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W8JX
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« Reply #3 on: July 01, 2014, 11:10:46 AM »

They call it a vacuum channel transistor as it uses a source and a drain but a vacuum where gate was. They are VERY tiny and built on a chip.
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KD0REQ
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« Reply #4 on: July 01, 2014, 11:22:51 AM »

had static do that to an RF amp mosfet once, and it didn't take a lab full of fancy scientists to generate it...
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W9FIB
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« Reply #5 on: July 01, 2014, 11:54:44 AM »

had static do that to an RF amp mosfet once, and it didn't take a lab full of fancy scientists to generate it...

Did it push the smoke out to make the vacuum?
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G3RZP
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« Reply #6 on: July 01, 2014, 12:25:41 PM »

We had a batch of MIL grade ICs returned after they leaked water.....the leak was so bad that the fine leak test didn't detect it!

But I had a batch of MIL grade 14 lead DIL ICs in ceramic packages that when the tube was emptied onto the bench, the lids flew off....
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AA4PB
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« Reply #7 on: July 01, 2014, 02:05:36 PM »

When a tube developed a grid leak, we always applied a grid leak resistor  Wink
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K8AXW
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« Reply #8 on: July 01, 2014, 09:22:58 PM »

Did the article say how many elements was in this vacuum transistor?
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W8JX
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« Reply #9 on: July 02, 2014, 04:44:00 AM »

Did the article say how many elements was in this vacuum transistor?

Yes a source and a drain with no apperant gate.
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K1CJS
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« Reply #10 on: July 02, 2014, 06:07:24 AM »

Maybe they'll incorporate it into a new tablet that will run only Windows--then Microsoft will design a new operating system that requires the use of that tablet.  Bet I know who the first buyer/trumpet blower will be....    Roll Eyes
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K4EZD
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« Reply #11 on: July 02, 2014, 07:37:29 AM »

Here is an article about the vacuum transistor ---- curious mash-up of vacuum tube and MOSFET could one day replace traditional silicon.

http://spectrum.ieee.org/semiconductors/devices/introducing-the-vacuum-transistor-a-device-made-of-nothing

 Smiley

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N0SYA
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« Reply #12 on: July 02, 2014, 11:05:29 AM »

Did the article say how many elements was in this vacuum transistor?

Possibly it was a duodiodehimutriode pentacathode.
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If you have a clumsy child, you make them wear a helmet. If you have death prone children, you keep a few clones of them in your lab.
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