Tube-number record

GN5/GN5A

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ClassZiffernanzeigeröhre (Indicator Tube)

Construction

Primary TypeOther / special

Envelope

GN 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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