Tube-number record
212E
0 archive entries
212E is a tube type in the TubeDatabase archive (class: Filamentary air-cooled triode). Recorded specifications: brand Western Electric, construction Triode, socket Special / none, maximum plate voltage 3000 V, and maximum plate dissipation 275 W. The archive does not yet hold a photographed example of this type.
BrandWestern Electric
ClassFilamentary air-cooled triode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialThoriated tungsten
Absolute Maximum Ratings
Plate Voltage3000 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Average Characteristics | 2000 V | 8500 | 1900 | 16 | — |
| Class A Audio Amplifier (1500V) | 1500 V | — | — | — | 170 mA |
| Class A Audio Amplifier (1250V) | 1250 V | — | — | — |
Application Notes
May be used as an audio-frequency amplifier or modulator; or as a radio-frequency oscillator or amplifier. If mounted horizontally, the plane of the filament should be vertical.
Datasheets
Datasheet: 212E.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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