25DN6
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BrandGeneral Electric
Classbeam pentode
BaseOctal
Filament25V @ 600mA
Construction
Primary Typebeam pentode
EnvelopeT-12
Base MaterialGlass
Sectionssingle
Filament / Heater
Heater NotesControlled heater warm-up characteristic for series-connected heaters
Absolute Maximum Ratings
Plate Voltage700 V
Plate Dissipation15 W
Grid 2 Voltage175 V
Grid 1 Voltage200 V
Cathode Current200 mA
H-C Voltage200 V
Audio Performance
Key Features
- High perveance
- High plate current at low plate and screen voltages
- High ratio of plate to screen current
- Controlled heater warm-up
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Average Characteristics | 125V | 9000 | 4000 | 4.35 | 70mA |
| High Current Operation | 50V | - | - | - | 240mA |
Application Notes
Designed primarily for use as the horizontal-deflection amplifier in television receivers which incorporate large-deflection-angle picture tubes.
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