Tube-number record
N30/G
0 archive entries
N30/G is a tube type in the TubeDatabase archive (class: Output Pentode). Recorded specifications: brand Osram, construction Pentode, maximum plate voltage 250 V, and maximum plate dissipation 8 W. The archive does not yet hold a photographed example of this type.
BrandOsram
ClassOutput Pentode
Filament13 V @ 0.3 mA
Construction
Primary TypePentode
Envelopecarbonised bulb
Sectionssingle
Filament / Heater
Heater NotesIntended for series running (AC/DC receivers) or parallel running (12-volt car radio or AC mains)
Absolute Maximum Ratings
Plate Voltage
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Condition 1 | 250 V | 3900 | 7500 | — | 32 mA |
| Condition 2 | 180 V | — | 4500 | — | 30 mA |
Application Notes
Designed for series or parallel operation in AC/DC receivers or 12-volt car batteries. A grid stopping resistance is recommended. Total grid resistance should not exceed 500,000 ohms.
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