Tube-number record
EF 2
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BrandPhilips Miniwatt
ClassPentode (H.F.)
Filament6.3 V @ 400 mA
Construction
Primary TypePentode
Filament / Heater
Heater NotesIndirect heating
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.5 W
Grid 2 Voltage125 V
Grid 1 Voltage-1.3 V
Cathode Current8 mA
H-C Voltage80 V
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| HF and IF amplifier | 250 V | 2200 | 1400000 | 3000 | 4.5 mA |
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