Tube-number record
7591 S
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7591 S is a tube type in the TubeDatabase archive (class: Power Pentode). Recorded specifications: brand JJ Electronic, construction Pentode, socket Octal, maximum plate voltage 550 V, and maximum plate dissipation 19 W. The archive does not yet hold a photographed example of this type.
BrandJJ Electronic
ClassPower Pentode
BaseOctal
Filament6.3 V @ 0.8 mA
Construction
Primary TypePentode
Filament / Heater
Absolute Maximum Ratings
Plate Voltage550 V
Plate Dissipation19 W
Grid 2 Voltage440 V
Cathode Current85 mA
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 amplifier | 300 V | 10000 | 29000 | 16.8 | 60 mA |
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