Tube-number record
PA 12/15
0 archive entries
PA 12/15 is a tube type in the TubeDatabase archive (class: Transmitting Pentode). Recorded specifications: brand Philips, construction Pentode, maximum plate voltage 12000 V, and maximum plate dissipation 12000 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassTransmitting Pentode
Construction
Primary TypePentode
EnvelopeWater-cooled
SectionsSingle
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage12000 V
Plate Dissipation12000 W
Grid 2 Voltage2000 V
Cathode Current3500 mA
Audio Performance
Key Features
- Water-cooled
- Directly heated
- Large power output
- Pentode structure
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Telegrafie Klasse C | 12000 V | 6000 | — | 4 | 2000 mA |
| Klasse C 6m Push-Pull | 8000 V | — | — | — | 4000 mA |
| HF Versterking Gemoduleerd 150m | 12000 V | — | — | — |
Application Notes
Specifically designed for amplifier stages in large transmitters. Can be used down to 6m wavelengths. Requires positive suppressor grid voltage for maximum power output.
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