TMA. 408
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BrandThomson-CSF
ClassMiniaturized Scan Converter Storage Tube
BaseDouble Noval (UTE 9C12)
Filament6.3V @ 600mA
Construction
Primary TypeDouble-ended Dual Gun
EnvelopeGlass/Metal
SectionsWriting gun (electrostatic focus), Reading gun (electromagnetic focus)
Filament / Heater
Heater NotesWriting heater insulated for 8000 V; Reading heater insulated for 2000 V
Absolute Maximum Ratings
Plate Voltage-7000 V
Grid 1 Voltage-100 V
H-C Voltage150 V
Audio Performance
Key Features
- Simultaneous writing and reading without crosstalk
- Induced conductivity target (EBIC)
- Rugged construction
- Adjustable storage time
- Fast erasure
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Writing Gun | -6000V | - | - | - | - |
| Reading Gun | -1200V | - | - | - | - |
Application Notes
Commonly used in Air Traffic Control for P.P.I. radar scan to T.V. scan conversion, signal to noise enhancement, and remote transmission of radar information.
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