Tube-number record
12ATP-
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BrandAllen B. Du Mont Laboratories
ClassCathode-Ray Tube
BaseCRT / special base
Filament6.3 V @ 1800 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass, 12 7/16-Inch diameter
Base MaterialPlastic
SectionsThree beam
Filament / Heater
Heater Notes1.8 Amperes +/- 10%
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation6 W
Grid 2 Voltage6000 V
Grid 1 Voltage-200 V
H-C Voltage180 V
Audio Performance
Key Features
- Electrostatic focus
- Electrostatic deflection
- Post acceleration
- Aluminized screen
- Three-beam gun structure
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 10000 V | — | — | — | 0.005 mA |
Application Notes
The use of post acceleration allows maximum deflection sensitivity with high overall accelerating voltages. Screen is aluminized to minimize charging effects and increase light output.
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