TETRODE
Tetrode
A tetrode is an electronic device having four active electrodes. The term most commonly applies to a two-grid amplifying vacuum tube, also called a screen grid tube. It consists of a sealed evacuated glass envelope containing four electrodes in this order: a cathode heated by a filament, a control grid, a screen grid, and a plate.The above text is a snippet from Wikipedia: Tetrode
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tetrode
Noun
- A thermionic valve similar to a triode with the addition of a screen grid to protect the control grid
- A dynatron
The above text is a snippet from Wiktionary: tetrode
and as such is available under the Creative Commons Attribution/Share-Alike License.