Tube-number record
8912
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BrandEIMAC (Varian)
ClassPlanar Triode
BasePlanar / disc seal
Filament6.3 V @ 650 mA
Construction
Primary TypeTriode
EnvelopeCeramic/Metal
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialOxide Coated
Warm-up Time60s
Heater NotesUnipotential cathode
Absolute Maximum Ratings
Plate Voltage2000 V
Plate Dissipation50 W
Grid 1 Voltage-100 V
Cathode Current100 mA
H-C Voltage50 V
Audio Performance
Key Features
- Compact
- Rugged ceramic/metal construction
- High power output
- High plate dissipation
- Excellent frequency stability
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| General Characteristics | — | 30000 | — | 85 | — |
Application Notes
Intended for CW plate- or grid-pulsed oscillator, amplifier, or frequency multiplier use. Readily lends itself to cavity circuit operation.
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