Tube-number record
NL-615
0 archive entries
NL-615 is a tube type in the TubeDatabase archive (class: Rectifier). Recorded specifications: brand National, construction Rectifier, base Plastic/Composite, socket 4-pin, and maximum plate voltage 2000 V. The archive does not yet hold a photographed example of this type.
BrandNational
ClassRectifier
Base4-pin
Construction
Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeGlass
Base MaterialPlastic/Composite
SectionsSingle
Filament / Heater
Warm-up Time20s
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier | 12 V | — | — | — | 8000 mA |
Application Notes
Light filament before applying load. All data are based on returns to filament center tap.
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