GL-889-A
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BrandGeneral Electric
ClassPower Triode
Construction
Primary TypeTriode
EnvelopeWater-cooled
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage8500 V
Plate Dissipation5000 W
Grid 1 Voltage-1000 V
Cathode Current2000 mA
Audio Performance
Power Output15000 W
Key Features
- Water-cooled plate
- Pliotron
- Suitable for high-frequency applications
- Minimized lead inductance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C Radio-Frequency Power Amplifier and Oscillator | 7500V | 9000 | - | 21 | 2000mA |
| Class B Radio-Frequency Power Amplifier | 7500V | 9000 | - | 21 | 900mA |
| Class C Plate-Modulated RF Amplifier | 6000V | 9000 | - | 21 | 1000mA |
Application Notes
The GL-889-A can be operated at maximum ratings as high as 50 megacycles. For higher frequencies, reduced plate voltage and input power are required.
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