Tube-number record
GL-919
0 archive entries
GL-919 is a tube type in the TubeDatabase archive (class: Phototube). Recorded specifications: brand General Electric, construction Other / special, socket Subminiature, and maximum plate voltage 500 V. The archive does not yet hold a photographed example of this type.
BrandGeneral Electric
ClassPhototube
BaseSubminiature
Construction
Primary TypeOther / special
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage500 V
Audio Performance
Key Features
- Two-electrode vacuum phototube
- High sensitivity in the red and infrared region
- High resistance to leakage current
- Stability of operation
- Permanence of calibration
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Luminous Sensitivity Test | 250 V | — | — | — | 0.02 mA |
Application Notes
The GL-919 is designed for measurement and relay applications. Its cathode is connected to the top cap to minimize leakage current, making it suitable for high-resistance circuits.
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