Tube-number record
PX25
0 archive entries
PX25 is a tube type in the TubeDatabase archive (class: 25 watt Triode). Recorded specifications: brand Marconi, construction Triode, socket 4-pin, maximum plate voltage 500 V, and maximum plate dissipation 25 W. The archive does not yet hold a photographed example of this type.
BrandMarconi
Class25 watt Triode
Base4-pin
Construction
Primary TypeTriode
EnvelopeGlass
Filament / Heater
Absolute Maximum Ratings
Plate Voltage500 V
Plate Dissipation25 W
Audio Performance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | — | 7500 | 1265 | 9.5 | — |
Application Notes
Normal operating conditions in class A are shown on the curve, with load 4000 ohms, bias resistance 475 ohms, grid bias 30 volts.
Datasheets
Datasheet: PX25.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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