Tube-number record
7750
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BrandWestinghouse
ClassHard Tube Pulse Modulator
Construction
Primary TypeTriode
EnvelopeGlass/Metal
SectionsSingle
Filament / Heater
MaterialThoriated Tungsten
Warm-up Time15s
Absolute Maximum Ratings
Plate Voltage30000 V
Plate Dissipation8000 W
Grid 1 Voltage-2500 V
Cathode Current100000 mA
Audio Performance
Key Features
- Forced-air cooled anode
- Thoriated tungsten filament
- Pulse modulator service
- Capable of 200A peak cathode current on short pulses
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Hard Tube Modulator | — | — | — | 20 | — |
Application Notes
The 7750 is a three-electrode tube designed for service as a hard tube modulator. The forced-air cooled anode is capable of dissipating 8 kilowatts. The cathode is a thoriated tungsten filament which may be operated with either d-c or single-phase a-c.
Datasheets
Datasheet: 7750.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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