Tube-number record
4694
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4694 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: construction Pentode, maximum plate voltage 400 V, and maximum plate dissipation 9 W. The archive does not yet hold a photographed example of this type.
ClassOutput Pentode
Filament6.3 V @ 0.9 mA
Construction
Primary TypePentode
EnvelopeGlass
Filament / Heater
Heater NotesIndirect by A.C.; parallel supply
Absolute Maximum Ratings
Plate Voltage400 V
Plate Dissipation9 W
Grid 2 Voltage425 V
Grid 1 Voltage-1.3 V
Cathode Current55 mA
H-C Voltage50 V
Audio Performance
Typical THD2.3%
Power Output12 W
Key Features
- Indirectly heated
- Parallel supply
- Class AB operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical characteristics 1 | 375 V | 8000 | 70000 | 23 | 24 mA |
| Typical characteristics 2 | 400 V | 7000 | 15000 | 23 | 22 mA |
Application Notes
Operating conditions provided for Class AB push-pull configuration at 375V and 400V plate potentials.
Datasheets
Datasheet: 4694.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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