Tube-number record
3CW30,000H7
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BrandEIMAC
ClassHigh-mu power triode
BaseFlexible / flying leads
Construction
Primary TypeTriode
EnvelopeCeramic/Metal
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Warm-up Time5s
Absolute Maximum Ratings
Plate Voltage8000 V
Plate Dissipation30000 W
Grid 1 Voltage-500 V
Cathode Current6000 mA
Audio Performance
Key Features
- Water-cooled anode
- High-mu
- Zero-bias Class B operation
- Ceramic/metal seals
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class AB2 RF Linear Amplifier (Cathode Driven) | 7000 V | — | — | 200 | 5920 mA |
| Class C Telegraphy or FM (Grid Driven) | 7000 V | — | — | 200 | 4000 mA |
Application Notes
Intended for Class C power amplifier or zero-bias Class B/AB linear service; also suitable as a dc voltage or current regulator or high-voltage switch tube.
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