Tube-number record
TKF4
0 archive entries
TKF4 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Tungsram, construction Pentode, maximum plate voltage 135 V, and maximum plate dissipation 0.5 W. The archive does not yet hold a photographed example of this type.
BrandTungsram
ClassPentode
Construction
Primary TypePentode
EnvelopeDom-Kolben
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage135 V
Plate Dissipation0.5 W
Grid 2 Voltage135 V
Grid 1 Voltage-0.2 V
Audio Performance
Key Features
- Batterie Hochfrequenz-Pentode
- Dom-Kolben
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Amplifier (90V) | 90 V | 700 | 1300000 | 900 | 1.2 mA |
| RF Amplifier (135V) | 135 V | 800 | 1000000 | 800 | 2.6 mA |
Application Notes
Used as an HF pre-amplifier or feedback audion. For audion usage, care must be taken to avoid microphonics. For full output drive, an AF choke can be used instead of the 0.5 MOhm resistor.
Datasheets
Datasheet: TKF4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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