Tube-number record

BI-DIRECTIONAL 10-WAY SELECTOR TUBE

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ClassDekatron Counting Tube

BaseDuodecal

Construction

Primary TypeOther / special

Envelope

Glass

Sections10-way

Filament / Heater

Absolute Maximum Ratings

Plate Voltage400 V

Cathode Current0.55 mA

Audio Performance

Key Features

Bi-directional
Visual indication through dome
Cold cathode

Typical Operation

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Recommended Operating Conditions	192 V	—	—	—	0.325 mA

Application Notes

The required anode current may be obtained from a 475 V supply via a 680,000 Ohms resistor. Guide bias of +36V does not apply in the case of sine wave drive.

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