ECF 1
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BrandPhilips
ClassTriode-Pentode
BaseSide-contact
Filament6.3V @ 200mA
Construction
Primary TypeTriode-Pentode
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesIndirect heating by A.C. or D.C.; parallel or series supply
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2 W
Grid 2 Voltage300 V
Grid 1 Voltage-1.3 V
H-C Voltage100 V
Audio Performance
Key Features
- Combined I.F. and L.F. amplifier
- Indirectly heated
- Parallel or series supply
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode section as H.F. or I.F. amplifier | 250V | 2000 | 1600000 | - | 5mA |
| Triode section | 150V | 2200 | 9000 | 20 | 8mA |
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