7565
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BrandWestinghouse
ClassPower Amplifier Triode
BaseLead Connections
Construction
Primary TypeTriode
EnvelopeGlass
Base MaterialMetal Anode
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Absolute Maximum Ratings
Plate Voltage8000 V
Plate Dissipation4000 W
Grid 1 Voltage-1500 V
Cathode Current2500 mA
Audio Performance
Typical THD4.5%
Power Output7700 W
Key Features
- Thoriated tungsten filament
- Forced air cooling
- High power dissipation
- Designed for modulator or amplifier use
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Audio Power Amplifier | 4500V | - | - | 6 | 880mA |
| Class AB Audio Power Amplifier (Two Tubes) | 7000V | - | - | 6 | 1100mA |
Application Notes
Maximum ratings apply for audio frequencies. Required air flow on anode is 300 CFM at 100% dissipation rating.
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