BI20
0 Tubes in archive
BrandFerranti
ClassLow Voltage X-Ray Tube
BaseInternational Octal
Construction
Primary TypeX-Ray Tube
EnvelopeGlass with thin window
SectionsSingle
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage25000 V
Plate Dissipation25 W
Grid 1 Voltage-1400 V
Audio Performance
Key Features
- Copper target
- Thin glass window for low absorption
- Directly heated tungsten filament
- Control electrode for focus adjustment
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| DC Operation with Grid Bias | 20000V | - | - | - | - |
| DC Operation with Auto Bias | 15000V | - | - | - | 1.5mA |
| AC Operation with Auto Bias | 15000V | - | - | - | 0.7mA |
Application Notes
Suitable for radiographic work on materials transparent to low voltage X-rays like plastics and thin metals. Radiation emitted through a thin glass window.
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