TCL4
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BrandTungsram
ClassPentode
BaseSide-contact (implied)
Filament35V @ 0.2mA
Construction
Primary TypePentode
EnvelopeDomkolben
SectionsSingle
Filament / Heater
Heater NotesAllstrom (Universal AC/DC)
Absolute Maximum Ratings
Plate Voltage400 V
Plate Dissipation9 W
Grid 2 Voltage400 V
Grid 1 Voltage-13 V
Cathode Current70 mA
Audio Performance
Typical THD10%
Power Output4 W
Key Features
- Allstrom
- Hochsteilpenthode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 200V | 8000 | 43000 | - | 45mA |
Application Notes
Normaler Schaltung mit Erzeugung der Gittervorspannung im Kathodenkreis.
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