CT783 (Sylvania)
Dekatron counting tube

Bi-directional single-pulse decimal counting tube.

The following pictures show the tube spinning.
Of course, only one of the cathodes is glowing, but the opening time of the camera leads to that different pictures:

a long opening time of the camera:

a short opening time of the camera:

An animation of a spinning dekatron:

German English    
Röhrentyp Tube type   CT783
Hersteller Brand   Sylvania
Vergleichstypen Substitutes   -
Zähl-Richtung Counting direction   bidirectional
Arbeitsweise Operation   single pulse
Art Sort   counting tube
Sockel Base   K8A
Fassung Socket   K8A
Nullposition Zero position   Pin6
Zähl-Schritte Counting steps   10
Anzahl der Hilfskathoden Number of guides   3
Gasfüllung Gas filling   Neon
Röhrendurchmesser maximal Tube diameter max. mm 32.5
Röhrenhöhe maximal Tube height max. mm 81.3
Brennspannung typisch Maintaining voltage typ. V 195
Anschlussbelegung: Pinout:    
PIN 01 PIN 01   K1-9
PIN 02 PIN 02   G3
PIN 03 PIN 03   G1
PIN 04 PIN 04   A
PIN 05 PIN 05   NC
PIN 06 PIN 06   K0
PIN 07 PIN 07   G3 out
PIN 08 PIN 08   G2

Pinout & Outline:

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