Tube-number record
GN5/GN5A
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ClassZiffernanzeigeröhre (Indicator Tube)
Construction
Primary TypeOther / special
EnvelopeGN 5: rot eingefärbt, GN 5 A: Klarglaskolben
Filament / Heater
Absolute Maximum Ratings
Audio Performance
Key Features
- Digit indicator
- GN5 has red contrast filter
- GN5A has clear glass
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Gleichspannung (DC) | 200 V | — | — | — | 3.5 mA |
Application Notes
The tube should not be operated without an anode resistor. To ensure long life, cathodes should be switched alternately; if continuous operation is unavoidable, a switch should occur at least once every 24 hours. Cathode No. 1 is designed to work without a balancing resistor.
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