90EY4F
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ClassOscilloscope Tube
BaseB.12.D
Filament4V @ 1000mA
Construction
Primary TypeCathode Ray Tube
EnvelopeFlat faced bulb
SectionsSingle gun
Filament / Heater
Absolute Maximum Ratings
Plate Voltage5000 V
Audio Performance
Key Features
- Flat faced bulb
- Electrostatic focusing
- Electrostatic deflection
- Yellow fluorescence
- Long afterglow persistence
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 (High Voltage) | 4000V | - | - | - | - |
| Condition 2 (Low Voltage) | 2000V | - | - | - | - |
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