Tube-number record
11A1
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BrandEDISWAN
ClassLow Mu Triode
BaseNoval (B9A)
Filament6.3 V @ 950 mA
Construction
Primary TypeTriode
EnvelopeMiniature
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Dissipation15 W
Cathode Current120 mA
H-C Voltage250 V
Audio Performance
Key Features
- Low mu triode
- Series stabiliser valve
- Suitable for operation in parallel
- Unrestricted mounting position
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Series Regulator (at Va=150V, Ia=100mA) | 150 V | 12000 | 375 | 4.5 | 100 mA |
| Series Regulator (Two valves in parallel) | 360 V | — | — | — | 200 mA |
Application Notes
Small resistors should be inserted in the anode and cathode leads of each valve for balancing purposes when operated in parallel.
Datasheets
Datasheet: 11A1.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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