Tube-number record
11TU7
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BrandTESLA
ClassCounting Tube (Dekatron)
Base10-pin
Construction
Primary TypeOther / special
EnvelopeGlass
Base MaterialBakelite
Sections10-stage
Filament / Heater
Absolute Maximum Ratings
Plate Voltage345 V
Grid 2 Voltage110 V
Cathode Current5 mA
Audio Performance
Key Features
- 10 main cathodes
- 10 transfer cathodes
- Gas-filled counting tube
- Bi-directional operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Switching speed up to 5 kc/s | 335 V | — | 24000 | — | 3.7 mA |
Application Notes
Counting tubes for use in calculating machines/instruments. Cathode current should be minimized for long life; periodic cycling between 1 and 5000 c/s is recommended.
Datasheets
Datasheet: 11TU7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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