Tube-number record
931-A
0 archive entries
931-A is a tube type in the TubeDatabase archive (class: Multiplier Phototube). Recorded specifications: brand RCA, year 1950, construction Multi-section, base Non-hygroscopic, socket Magnal, and maximum plate voltage 1250 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassMultiplier Phototube
BaseMagnal
Construction
Primary TypeMulti-section
EnvelopeT9
Base MaterialNon-hygroscopic
Sections9
Filament / Heater
Absolute Maximum Ratings
Plate Voltage1250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 100 volts per dynode stage | 1000 V | — | — | 1000000 | 1 mA |
| 75 volts per dynode stage | 750 V | — | — | 150000 | — |
Application Notes
Operating stability is dependent on the magnitude of the anode current and its duration. Operation below 1000 volts is recommended for maximum signal-to-noise ratio.
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