EL82
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BrandPhilips
ClassPentode
BaseNoval
Filament6.3V @ 800mA
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialGlass
Sections1
Filament / Heater
Heater NotesIndirect by A.C. or D.C.; parallel supply
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation9 W
Grid 2 Voltage250 V
Grid 1 Voltage-1.3 V
Cathode Current75 mA
H-C Voltage100 V
Audio Performance
Typical THD10%
Power Output4.2 W
Key Features
- Indirectly heated
- Frame output pentode
- Sound output pentode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A sound output | 170V | 9000 | 20000 | 10 | 53mA |
| Class A sound output | 200V | 7600 | 24000 | 10 | 45mA |
| Push-pull (two tubes) | 170V | - | - | - | 46mA |
| Push-pull (two tubes) | 200V | - | - | - | 45mA |
Application Notes
To allow for tube spread and deterioration in frame output application, design for peak anode current not exceeding 90mA at Va=50V or 120mA at Va=60V. When used as frame output tube with Wa <= 4.5W, max plate voltage is 450V.
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