Tube-number record
EF 12
0 archive entries
EF 12 is a tube type in the TubeDatabase archive (class: Pentode). Recorded specifications: brand Philips, construction Pentode, socket Side-contact (P-base), maximum plate voltage 300 V, and maximum plate dissipation 1.5 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassPentode
BaseSide-contact (P-base)
Filament6.3 V @ 0.2 mA
Construction
Primary TypePentode
EnvelopeMetal
SectionsSingle
Filament / Heater
Heater Notesindirect by A.C. or D.C.
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| R.F. or I.F. amplifier | 250 V | 2100 | 2000000 | 25 | 3 mA |
| R.F. or I.F. amplifier | 200 V | 2100 | 1500000 | 25 | 3 mA |
| R.F. or I.F. amplifier | 100 V | 2100 | 400000 | 25 | 3 mA |
Application Notes
For use as R.F., I.F., or A.F. amplifier. Triode connection possible by connecting screen grid to anode (max plate voltage 200V).
Datasheets
Datasheet: EF12.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
0 results