SBWP-
0 Tubes in archive
BrandAllen B. Du Mont Laboratories, Inc.
ClassCathode-Ray Tube
BaseB12-37
Filament6.3V @ 600mA
Construction
Primary TypeElectrostatic focus and deflection
EnvelopeJ42K
Base MaterialMedium shell diheptal 12-pin
SectionsSingle-gun cathode-ray tube
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage24000 V
Plate Dissipation6 W
Grid 2 Voltage4000 V
Grid 1 Voltage-200 V
H-C Voltage180 V
Audio Performance
Key Features
- Linear post accelerator
- Spiral resistance winding
- Electrostatic focus
- Electrostatic deflection
- Aluminized screen
- High deflection sensitivity
- High writing rate
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Post Accelerator Operation | 24000V | - | - | - | 0.1mA |
Application Notes
The tube features a linear post accelerator (spiral resistance winding) which extends from the tube face to the deflection plate region, allowing for a gradual voltage gradient. For an Ib3 of 25 uA DC measured in accordance with MIL-E-1 specifications.
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