Stock photo: vacuum tube 3

Vacuum Tube 3

Image ID: 1377834 | Add to lightbox | View image license
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4324 x 3089 pixels14.4" x 10.3" at 300dpi
36.6cm x 26.2cm at 300dpi
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»  vacuum tube 3
All modern vacuum tubes are based on the concept of the Audion--a heated "cathode" boils off electrons into a vacuum; they pass through a grid (or many grids), which control the electron current; the electrons then strike the anode (plate) and are absorbed. By designing the cathode, grid(s) and plate properly, the tube will make a small AC signal voltage into a larger AC voltage, thus amplifying it.
»  Uploaded by
osmar01 (||)
on Jan 28, 2012
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477
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»  Model release
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Comments

1. Jan 30, 2012 Davidmau
"really original! they looks iike martians "

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