EF54
0 Tubes in archive
BrandMullard
ClassShort wave R.F. Pentode
BaseB9G
Filament6.3V @ 0.3mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation3 W
Grid 2 Voltage300 V
Grid 1 Voltage-1.3 V
Cathode Current15 mA
H-C Voltage100 V
Audio Performance
Key Features
- High mutual conductance
- Sharp cut-off
- Single-ended
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| R.F. Pentode | 250V | 7700 | 500000 | 80 | 10mA |
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