Tube-number record
N41
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BrandOSRAM
ClassPower Pentode
Base7-pin (non-miniature)
Filament4 V @ 2 mA
Construction
Primary TypePentode
EnvelopeGlass, carbonised bulb
SectionsSingle
Filament / Heater
Heater NotesIndirectly Heated Cathode
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation8 W
Grid 2 Voltage250 V
Audio Performance
Key Features
- High mutual conductance
- Extreme sensitivity
- Carbonised bulb
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Power Amplifier | 250 V | 10000 | — | — | 32 mA |
Application Notes
A grid stopping resistance is recommended, but the total resistance in the grid circuit should in no case exceed 500,000 ohms. Type N41 should only be employed with full automatic grid bias.
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