Tube-number record
GL-5820
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BrandGeneral Electric
ClassImage Orthicon Camera Tube
BaseDiheptal
Filament6.3 V @ 600 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
SectionsPhotocathode, Image section, Target, Multiplier section
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Plate Voltage1350 V
Grid 2 Voltage350 V
Grid 1 Voltage125 V
H-C Voltage125 V
Audio Performance
Key Features
- High sensitivity for outdoor and studio pickup
- Spectral response approaching that of the human eye
- Stable performance across wide light levels
- Virtually no infrared sensitivity
- Magnetic focus and deflection
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation | 1250 V | — | — | — | 0.03 mA |
Application Notes
The GL-5820 portrays colors in nearly their true tonal gradation by preventing color-masking by infrared. Commercially acceptable pictures can be obtained at levels as low as 1 foot-candle.
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