Tube-number record
M.P./PEN.
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BrandCOSSOR
ClassOutput Pentode
Filament4 V @ 1 mA
Construction
Primary TypePentode
SectionsSingle
Filament / Heater
Heater NotesIndirectly Heated
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation8 W
Grid 2 Voltage250 V
Audio Performance
Key Features
- Medium sensitivity
- Indirectly heated
- High efficiency
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 250 V | 3500 | — | — | 30 mA |
| Pentode | 200 V | — | — | — | — |
Application Notes
A corrector circuit consisting of a .01 mfd condenser and a resistance of 10,000 ohms joined in series across the speaker terminals is recommended. The Screen Voltage should never exceed the Anode Voltage.
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