905-A
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BrandRCA
ClassCathode-Ray Tube
Base7 Long-Shell Medium 5-Pin
Filament2.5V @ 2100mA
Construction
Primary TypeHigh-Vacuum Cathode-Ray Tube
EnvelopeGlass
Base MaterialMicanol
Sections1
Filament / Heater
Heater Notesac or dc
Absolute Maximum Ratings
Plate Voltage2200 V
Grid 2 Voltage2200 V
Grid 1 Voltage-125 V
Audio Performance
Key Features
- Green Fluorescence
- Medium Persistence Phosphor
- Electrostatic Focusing
- Electrostatic Deflection
- High-Vacuum
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation 1 | 1500V | - | - | - | - |
| Typical Operation 2 | 2000V | - | - | - | - |
Application Notes
Brilliance and definition decrease with decreasing Anode No. 2 voltage. Anode No. 2 should not be less than 1500V. Grid No. 1 voltage should be near cutoff before application of anode voltages.
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