R51A
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BrandVisitron
ClassGas Phototube
Base3-pin
Construction
Primary TypeGas Phototube
EnvelopeT55
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage90 V
Audio Performance
Key Features
- Rectangular anode
- Shadow-free cathode area
- Infra-red sensitive
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Gas Amplification | 90V | - | - | 12 | - |
Application Notes
Commonly used in portable 16 MM sound-on-film production equipment.
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