Tube-number record
5659
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BrandGeneral Electric
ClassBeam power amplifier pentode
BaseOctal
Filament12.6 V @ 150 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeMT-8
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation7.5 W
Grid 2 Voltage250 V
Audio Performance
Typical THD7%
Power Output3.4 W
Key Features
- Reliable performance under conditions of severe vibration
- Intermittent operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier | 250 V | 3000 | 70000 | — | 30 mA |
Application Notes
The D-C resistance in the grid circuit, under rated maximum conditions, should not exceed 500000 Ohms for self-bias operation and 100000 Ohms for fixed bias operation.
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