TAL4
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BrandTUNGSRAM
ClassHigh-slope Output Pentode
BaseP-base (8-pin Side Contact)
Filament4V @ 1.3mA
Construction
Primary TypePentode
EnvelopeDome bulb (Domkolben)
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation9 W
Grid 2 Voltage250 V
Grid 1 Voltage-13 V
Cathode Current65 mA
Audio Performance
Power Output4.5 W
Key Features
- Hochsteilpenthode
- Wechselstrom
- Domkolben
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Single-ended Class A | 250V | 9500 | 80000 | - | 36mA |
| Push-Pull Class B | 250V | - | - | - | - |
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