21AMP23A
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BrandNational Video Corporation
ClassCathode Ray Tube
BaseBS-57
Filament6.3V @ 0.5mA
Construction
Primary TypeMagnetic focus and magnetic deflection
EnvelopeGlass rectangular bulb
Base MaterialGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated cathode
Absolute Maximum Ratings
Plate Voltage18000 V
Grid 2 Voltage500 V
Grid 1 Voltage-125 V
H-C Voltage180 V
Audio Performance
Key Features
- Magnetic focus
- Magnetic deflection
- 90 degree deflection
- Metal-backed screen
- External conductive coating
- Ion-trap magnet required
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Standard Picture Tube Operation | 16000V | - | - | - | - |
Application Notes
Shielding of x-ray radiation may be necessary if anode is operated in excess of 16 kilovolts.
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