Tube-number record
EF 2
0 archive entries
EF 2 is a tube type in the TubeDatabase archive (class: Pentode (H.F.)). Recorded specifications: brand Philips Miniwatt, construction Pentode, maximum plate voltage 250 V, and maximum plate dissipation 1.5 W. The archive does not yet hold a photographed example of this type.
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
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| HF and IF amplifier | 250 V | 2200 | 1400000 | 3000 | 4.5 mA |
0 results