Tube-number record
7748
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BrandWestinghouse
ClassTriode
Construction
Primary TypeTriode
EnvelopeWater Cooled with Integral Water Jacket
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Warm-up Time15s
Absolute Maximum Ratings
Plate Voltage12500 V
Plate Dissipation35000 W
Grid 1 Voltage-3000 V
Cathode Current10000 mA
Audio Performance
Key Features
- Water cooled anode
- Integral water jacket
- Thoriated tungsten filament
- High power output up to 46.5 kW
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class C RF Power Amplifier/Oscillator | 7500 V | — | — | 20 | 5500 mA |
| Class C RF Power Amplifier/Oscillator | 10000 V | — | — | 20 | 4700 mA |
| Class C RF Power Amplifier/Oscillator | 12500 V | — | — | 20 |
Application Notes
Designed for service as an oscillator, amplifier or modulator in Class B & C operation. Maximum ratings apply to 30 megacycles.
Datasheets
Datasheet: 7748.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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