Tube-number record
212
0 archive entries
212 is a tube type in the TubeDatabase archive (class: Power Triode). Recorded specifications: construction Triode, maximum plate voltage 3000 V, and maximum plate dissipation 275 W. The archive does not yet hold a photographed example of this type.
ClassPower Triode
Construction
Primary TypeTriode
EnvelopeGlass
Sections1
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage3000 V
Plate Dissipation275 W
Audio Performance
Key Features
- Thoriated tungsten filament
- High power output
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 1500 V | 4300 | 3800 | 16 | 170 mA |
Application Notes
Used as an audio-frequency amplifier or oscillator in radio transmitting equipment.
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