File:Triode tube 1906.jpg
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原始文件 （1,835×1,258像素，文件大小：194 KB，MIME类型：image/jpeg）
| 相机位置 |  | 在以下服务上查看本图像和附近其他图像： OpenStreetMap |  |
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| 描述 |
English: An early De Forest audion tube, the first electron tube that could amplify. The first triode, or tube with three electrodes, a filament, grid, and plate, the audion was invented in 1906 by American engineer Lee De Forest. The top metal electrode is the plate. The zigzag metal wire partly visible under it is the grid. The filament was originally under that, attached to the wires at left, but has burned out. As many Audions did, this model had two filaments (indicated by the four filament supply wires) so that when one burned out the "spare" could be used. The filament wires were attached to the screw terminal at left, while the grid and plate terminals were brought out through the right end of the glass envelope to the two wires at right. Tube belongs to History of San Jose, Perham Collection of Early Electronics. |
| 日脚 | GMT |
| 来源 | Photo by uploader, taken at The History of Audio: The Engineering of Sound, an exhibition of the San Francisco Airport Museums[1] in SFO Airport, Terminal 3 from 2006-09 to 2007-05. |
| 作者 | Gregory F. Maxwell <gmaxwell@gmail.com> PGP:0xB0413BFA |
| 许可协议 (重用本文件) |
GFDL-1.2 |
我，本作品著作权人，特此采用以下许可协议发表本作品：
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| 日脚 / 辰光 | 微缩图 | 维度 | 用户 | 备注 | |
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| 当前 | 2006年12月21号 (四) 06:53 | | 1,835 × 1,258（194 KB） | Yves-Laurent | Rétablissement de la version précédente |
| 2006年12月21号 (四) 06:50 |  | 1,835 × 1,258（194 KB） | Yves-Laurent | == Summary == {{Information |Description= Lee de Forest's triode tube (Audion) from 1906. Courtesy of History of San Jose, Perham Collection of Early Electronics. |Source= en:Triode_tube_1906.jpg : Photo by original uploader, taken at The History of | |
| 2006年11月13号 (一) 11:46 |  | 1,835 × 1,258（194 KB） | Gmaxwell | {{Location dec|37.618615|-122.386993|scale:1000}} {{Information |Description=Lee de Forest's triode tube (Audion) from 1906. Courtesy of History of San Jose, Perham Collection of Early Electronics. |Source=Photo by uploader, taken at ''The History of Audi |
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