Tube-number record
A409
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BrandPhilips
ClassTriode
Construction
Primary TypeTriode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Audio Performance
Key Features
- Miniwatt series
- Detector with transformer coupling
- L.F. amplifier with transformer coupling
- Oscillator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal Operation | 100 V | 900 | 10000 | 9 | 5.5 mA |
| Maximum | — | 1200 | — | — | — |
Application Notes
Audion mit Transformatorkopplung, N.F.-Verstärker mit Transformatorkopplung, Oszillator.
Datasheets
Datasheet: A409.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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