WE 15
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BrandPhilips / Telefunken
ClassBeam Power Pentode
BaseSide Contact
Filament6.3V @ 900mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation9 W
Grid 2 Voltage275 V
Cathode Current55 mA
H-C Voltage50 V
Audio Performance
Power Output4.3 W
Key Features
- Low frequency final beam pentode
- 9W anode dissipation
- High sensitivity
- Direct drive from detector possible
- Blackened glass bulb for heat dissipation
- Oval cathode with bifilar spiral filament
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 | 250V | 9000 | 50000 | - | 36mA |
Application Notes
To avoid ultra-short wave oscillations, use a resistance of at least 1000 Ohms in series with the grid, or 100 Ohms in series with the screen.
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