Tube-number record
7G7/1232
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BrandTUNG-SOL
ClassSharp cut-off pentode voltage amplifier
BaseLoctal
Filament6.3 V @ 450 mA
Construction
Primary TypePentode
EnvelopeT-9
Base MaterialLock-in
SectionsSingle
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1.5 W
Grid 2 Voltage100 V
H-C Voltage90 V
Audio Performance
Key Features
- Sharp cut-off
- Lock-in construction
- High transconductance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 250 V | 4500 | 800000 | — | 6 mA |
Application Notes
Designed for use in television or other high-frequency amplifiers where low gain may be compensated for by high transconductance.
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