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Tube Database (7,341 tube types · 1,270 archive entries)

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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GL-917 vacuum tube outline illustration

Tube-number record

GL-917

0 archive entries

GL-917 is a tube type in the TubeDatabase archive (class: Phototube). Recorded specifications: brand General Electric, construction High-vacuum phototube, socket 4-pin, and maximum plate voltage 500 V. The archive does not yet hold a photographed example of this type.

BrandGeneral Electric
ClassPhototube
Base4-pin

Construction

Primary TypeHigh-vacuum phototube
EnvelopeT-9
SectionsSingle

Filament / Heater

Absolute Maximum Ratings

Plate Voltage500 V

Audio Performance

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Luminous sensitivity test250 V————

Application Notes

The GL-917 is a two-electrode high-vacuum phototube for measurement and relay applications. The anode is connected to the top cap. It may be used in series with the GL-919.

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    Key Features
    • High sensitivity in the red and infrared regions
    • High resistance to leakage current
    • Stability of operation
    • Two-electrode high-vacuum type