Tube-number record
7791
0 archive entries
7791 is a tube type in the TubeDatabase archive (class: Industrial Electron Tube). Recorded specifications: brand Tung-Sol, construction Diode, socket Special / none, and maximum plate voltage 25000 V. The archive does not yet hold a photographed example of this type.
BrandTung-Sol
ClassIndustrial Electron Tube
BaseSpecial / none
Filament5 V @ 15000 mA
Construction
Primary TypeDiode
Rectifier TypeHalf-wave
EnvelopeMetal/Radiator
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier Service | 25000 V | — | — | — | 2000 mA |
| Shunt Diode Service | 30000 V | — | — | — | 500 mA |
Application Notes
Designed for use in high-voltage rectifier circuits. In order to avoid damage to tube, the cathode connection must be made to the base flange only. The 7791 should be protected from transient voltages by spark gaps.
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