12GP7
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BrandGeneral Electric Co.
ClassCathode-Ray Tube
BaseDiheptal 12-Pin
Filament6.3V @ 600mA
Construction
Primary TypeCRT
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesAllowable variation +/- 10%
Absolute Maximum Ratings
Plate Voltage6600 V
Grid 2 Voltage2200 V
H-C Voltage250 V
Audio Performance
Key Features
- Electrostatic focusing
- Electrostatic deflection
- Medium Metal Cap bulb contact
- Long persistence phosphor
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Operation 1 | 3000V | - | - | - | - |
| Operation 2 | 4000V | - | - | - | - |
Application Notes
The undeflected focused spot will fall within a 35 mm square centered at the geometric center of the tube face. Symmetrical deflection voltage must be used. Cutoff voltage is the voltage necessary for visual extinction of a stationary focused spot.
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