Tube-number record
7K12C
0 archive entries
7K12C is a tube type in the TubeDatabase archive (class: High-frequency pentode). Recorded specifications: construction Pentode, socket Octal, maximum plate voltage 260 V, and maximum plate dissipation 1.9 W. The archive does not yet hold a photographed example of this type.
ClassHigh-frequency pentode
BaseOctal
Filament7.35 V @ 425 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated oxide-coated cathode
Absolute Maximum Ratings
Plate Voltage260 V
Plate Dissipation1.9 W
Grid 2 Voltage180 V
H-C Voltage150 V
Audio Performance
Typical THD1.4%
Power Output3.4 W
Key Features
- Short characteristic curve
- High-frequency pentode
- Glass envelope
- Indirectly heated oxide-coated cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Amplifier | 250 V | 1850 | 500000 | — | 5.5 mA |
Application Notes
Designed for amplification of high-frequency voltage in long-distance wire service systems.
0 results