MA 12/15
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BrandPhilips
ClassTriode
Construction
Primary TypeTriode
EnvelopeGlass with water-cooled anode
SectionsSingle
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage12000 V
Plate Dissipation15000 W
Audio Performance
Power Output42000 W
Key Features
- Water-cooled anode
- Directly heated tungsten filament
- High power transmitter triode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| L.F. class A amplification | 12000V | 7500 | 1867 | 14 | 1000mA |
| L.F. class B amplification (two valves) | 12000V | 7500 | - | 14 | 5340mA |
| H.F. class C telegraphy | 12000V | - | - | - | 2500mA |
| H.F. class B telephony | 12000V | - | - | - | 1500mA |
Application Notes
Used as Modulator, H.F. and L.F. amplifier in water-cooled systems.
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