15 Mar

File:Audion tube.jpg

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Revision as of 09:18, 15 March 2013
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=={{int:filedesc}}==

=={{int:filedesc}}==

{{Information

{{Information
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|description={{en|1=A De Forest [[:en:Audion|Audion]] tube, the first [[:en:vacuum tube|vacuum tube]] that could [[:en:amplification|amplify]]. The first [[:en:triode|triode]], or tube with three electrodes, a [[:en:electrical filament|filament]], [[:en:grid (electricity)|grid]], and [[:en:plate electrode|plate]], it was invented in 1906 by American inventor [[:en:Lee De Forest|Lee De Forest]]. This example is burned out; only the ends of the filament wires are left, visible in the center of the tube. This tube has two connected grids ''(zigzag wires)'' on either side of the filament, and two plates ''(outside the grids)''. The filament was connected to the screw terminal at bottom, while the grid and plate connections were brought out to wires at the top.

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|description={{en|1=A De Forest [[:en:Audion|Audion]] tube, the first [[:en:vacuum tube|electron tube]] that could [[:en:amplification|amplify]]. The first [[:en:triode|triode]], or tube with three electrodes, a [[:en:electrical filament|filament]], [[:en:grid (electricity)|grid]], and [[:en:plate electrode|plate]], the audion was invented in 1906 by American inventor [[:en:Lee De Forest|Lee De Forest]]. This example is burned out; only the ends of the filament wires are left, visible in the center of the tube. This tube has two connected grids ''(zigzag wires)'' on either side of the filament, and two plates ''(outside the grids)''. The filament was connected to the screw terminal at bottom, while the grid and plate connections were brought out to wires at the top.

}}

The caption of the picture read: "''This is a real old De Forest audion. Several years ago radio amateurs saved for long periods to procure one of these magic bulbs. As may be observed, two filaments, two grids, and two plates were employed. The stability of this type tube was anything but constant due to imperfect evacuation.''"

The caption of the picture read: "''This is a real old De Forest audion. Several years ago radio amateurs saved for long periods to procure one of these magic bulbs. As may be observed, two filaments, two grids, and two plates were employed. The stability of this type tube was anything but constant due to imperfect evacuation.''"
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[[Category:Uploaded with UploadWizard]]

[[Category:Uploaded with UploadWizard]]

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{{Uncategorized|year=2013|month=March|day=15}}
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[[Category:Audion]]

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[[Category:Triode]]

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[[Category:Lee De Forest]]

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