Tube-number record
SHARP CUT-OFF PENTODE AMPLIFIER
0 archive entries
SHARP CUT-OFF PENTODE AMPLIFIER is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand TUNG-SOL, year 1946, construction Pentode, socket Loctal, maximum plate voltage 300 V, and maximum plate dissipation 2 W. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassPentode
BaseLoctal
Filament7 V @ 0.16 mA
Construction
Primary TypePentode
EnvelopeT-9
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2 W
Grid 2 Voltage300 V
Grid 1 Voltage-1 V
Audio Performance
Key Features
- Sharp Cut-off
- Unipotential Cathode
- Internal Shield
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 250 V | 4200 | 750000 | — | 6 mA |
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