GL-919
0 Tubes in archive
BrandGeneral Electric
ClassPhototube
BaseM8-074
Construction
Primary TypeVacuum Phototube
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 | 250V | - | - | - | 0.02mA |
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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