Tube-number record
25DN6
0 archive entries
25DN6 is a tube type in the TubeDatabase archive (class: beam pentode). Recorded specifications: brand General Electric, year 1956, construction Beam tetrode / beam power, base Glass, socket Octal, maximum plate voltage 700 V, and maximum plate dissipation 15 W. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
Classbeam pentode
BaseOctal
Filament25 V @ 600 mA
Construction
Primary TypeBeam tetrode / beam power
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 | 125 V | 9000 | 4000 | 4.35 | 70 mA |
| High Current Operation | 50 V | — | — | — | 240 mA |
Application Notes
Designed primarily for use as the horizontal-deflection amplifier in television receivers which incorporate large-deflection-angle picture tubes.
0 results