Tube-number record
7675
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BrandWestinghouse
ClassLow Pressure Ion Gauge Tube
BaseFlexible / flying leads
Construction
Primary TypeTriode
EnvelopeHard Glass (Corning 7720)
Base MaterialGlass
SectionsSingle
Filament / Heater
MaterialTungsten
Absolute Maximum Ratings
Plate Voltage500 V
Plate Dissipation100 W
Grid 1 Voltage-100 V
Cathode Current200 mA
Audio Performance
Key Features
- Bayard-Alpert inverted geometry design
- Two tungsten filaments (one spare)
- Easily out-gassed electrode structure
- Hard glass construction
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Ion Gauge Operation | 150 V | — | — | — | 10 mA |
Application Notes
The ratio of collector current to grid current is proportional to gas pressure. Outgassing can be performed by connecting grid and collector together and applying up to 100W power.
Datasheets
Datasheet: 7675.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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