Tube-number record
EF184
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EF184 is a tube type in the TubeDatabase archive (class: Sharp cut-off pentode). Recorded specifications: brand PHILIPS, construction Pentode, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.
BrandPHILIPS
ClassSharp cut-off pentode
BaseNoval (B9A)
Filament6.3 V @ 300 mA
Construction
Primary TypePentode
Envelopeglass
Sectionssingle
Filament / Heater
Heater NotesIndirect heating by A.C. or D.C.; parallel or series supply
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation2.5 W
Grid 2 Voltage250 V
Grid 1 Voltage-1.3 V
Cathode Current25 mA
H-C Voltage150 V
Audio Performance
Key Features
- Sharp cut-off pentode
- Constant steepness
- High transconductance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical characteristics | 200 V | 15000 | 380000 | 60 | 10 mA |
| Typical characteristics (Alternate) | 170 V | 15600 | 330000 | 60 | 10 mA |
Application Notes
Specifically designed for use as an I.F. amplifier in television receivers. Operation with cathode bias resistor is recommended. Not recommended for circuits with automatic gain control due to sharp cut-off characteristic.
Datasheets
Datasheet: EF184.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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