Tube-number record
DLL 21
0 archive entries
DLL 21 is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand Philips, construction Pentode, socket Loctal, and maximum plate voltage 135 V. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassOutput Pentode
BaseLoctal
Construction
Primary TypePentode
EnvelopeGlass
SectionsDouble
Filament / Heater
MaterialDirectly Heated
Absolute Maximum Ratings
Plate Voltage135 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B Push-Pull (100mA filament) | 90 V | — | — | — | — |
| Class B Push-Pull (100mA filament) | 120 V | — | — | — | — |
| Class B Push-Pull (200mA/2.8V filament) | 135 V | — | — | — |
Datasheets
Datasheet: DLL21.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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