Tube-number record
7540
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BrandWestinghouse
ClassLo Mu Power Triode
Construction
Primary TypeTriode
EnvelopeIntegral water jacket
SectionsSingle
Filament / Heater
Materialthoriated tungsten
Absolute Maximum Ratings
Plate Voltage15000 V
Plate Dissipation35000 W
Cathode Current10000 mA
Audio Performance
Power Output59000 W
Key Features
- Zero drive modulator service
- Accurately aligned integral water jacket
- Thoriated tungsten cathode
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Two Tubes Push-Pull, 10kV | 10000 V | — | — | 5 | 4750 mA |
| Two Tubes Push-Pull, 12.5kV | 12500 V | — | — | 5 | 4000 mA |
| Two Tubes Push-Pull (Reactive Load) | 12500 V | — | 9400 | 5 |
Application Notes
The 7540 is a three electrode tube designed for zero drive modulator service. Ratings are for audio frequency only.
Datasheets
Datasheet: 7540.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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