Tube-number record
401
0 archive entries
401 is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: brand Kellogg, construction Triode, and maximum plate voltage 135 V. The archive does not yet hold a photographed example of this type.
BrandKellogg
ClassTriode
Filament3 V @ 1 mA
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesAC Heater
Absolute Maximum Ratings
Plate Voltage135 V
Audio Performance
Key Features
- AC operated heater
- Top-cap heater terminals
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Amplifier | 90 V | 600 | 13000 | 8.2 | 3 mA |
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