AL 31-10
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BrandPhilips
ClassRadar Cathode Ray Tube
BaseDUODECAL 7-pin
Filament6.3V @ 300mA
Construction
Primary TypeRadar CRT
EnvelopeGlass
Base MaterialPlastic
SectionsSingle
Filament / Heater
Heater NotesIndirect by A.C. or D.C.; series or parallel supply
Absolute Maximum Ratings
Plate Voltage14000 V
Grid 2 Voltage500 V
Grid 1 Voltage-200 V
H-C Voltage150 V
Audio Performance
Key Features
- Metal-backed screen
- Round screen
- Aluminized
- Electrostatic focusing
- Magnetic deflection
- Long persistence
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Radar Service | 12000V | - | - | - | - |
Application Notes
For visual extinction of the undeflected focused spot, the grid 1 voltage limits are -30 to -70V. Focusing voltage limits of -200 to +200V provide acceptable focus quality; at least -300 to +300V is required to pass through the focus point.
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