Tube-number record
DL11
0 archive entries
DL11 is a tube type in the TubeDatabase archive (class: Endpentode). Recorded specifications: brand TELEFUNKEN, year 1941, construction Pentode, maximum plate voltage 150 V, and maximum plate dissipation 1 W. The archive does not yet hold a photographed example of this type.
BrandTELEFUNKEN
ClassEndpentode
Construction
Primary TypePentode
EnvelopeGlass
Sections1
Filament / Heater
MaterialDirectly Heated
Absolute Maximum Ratings
Plate Voltage150 V
Plate Dissipation1 W
Grid 2 Voltage150 V
Grid 1 Voltage-0.5 V
Cathode Current8 mA
Audio Performance
Typical THD10%
Power Output0.35 W
Key Features
- direkt geheizt
- Batterierdhre
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Operation 1 | 120 V | 1100 | 500000 | — | 4.7 mA |
| Operation 2 | 90 V | 1000 | 300000 | — | 3.2 mA |
Application Notes
Die Röhren sind für Heizung aus einer einzelligen Trockenbatterie dimensioniert. Heizspannungsbereich 0.9V bis 1.45V.
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