Tube-number record
SC-3144
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BrandSylvania
ClassElectrostatic Charge Printing Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeOther / special
EnvelopeGlass with Wire Array Printing Head
Sections1
Filament / Heater
Heater NotesCurrent tolerance is +/- 30 mA
Absolute Maximum Ratings
Plate Voltage25000 V
Grid 2 Voltage700 V
Grid 1 Voltage-155 V
H-C Voltage200 V
Audio Performance
Key Features
- High Speed Printing
- High Resolution
- Low capacitance between wire elements
- Single line scanning
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Grid Drive Service | 10000 V | — | — | — | 0.1 mA |
Application Notes
Used in high speed printing equipment for developing permanent visual records from charge patterns on dielectric surfaces. Anode voltage of 20,000 volts dc recommended for high resolution.
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