Tube-number record
EL821
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ClassVideo Output Pentode
BaseNoval (B9A)
Filament6.3 V @ 750 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage275 V
Plate Dissipation12 W
Grid 2 Voltage275 V
Cathode Current60 mA
H-C Voltage90 V
Audio Performance
Key Features
- High mutual conductance
- Video output pentode
- Suitable for high definition television equipment
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 | 250 V | 13000 | 60000 | 26 | 40 mA |
| Condition 2 | 250 V | 11000 | 50000 | 26 | 40 mA |
Application Notes
Particularly suitable for use in high definition television equipment as a video output stage.
Datasheets
Datasheet: EL821.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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