EL509
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ClassPower Pentode
BaseMagnoval
Filament6.3V @ 2.5mA
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialGlass
Sections1
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage700 V
Plate Dissipation30 W
Grid 2 Voltage250 V
Grid 1 Voltage-200 V
Cathode Current500 mA
H-C Voltage250 V
Audio Performance
Key Features
- High peak anode current
- Magnoval base
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 160V | 18000 | 8000 | - | 120mA |
Application Notes
The EL509 is designed for television horizontal deflection circuits and high power audio amplification.
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