GS10C (Baird-Atomic/Hivac)
Dekatron counting tube

Bi-directional double-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 middle opening time of the camera:

a short opening time of the camera:

a long opening time of the camera:

by night, with  long opening time of the camera:

An animation of a spinning dekatron:

German English    
Röhrentyp Tube type   GS10C
Hersteller Brand   Baird-Atomic/Hivac
Vergleichstypen Substitutes   CV2325, GS10C/S, M2465-402, Z502S
Zähl-Richtung Counting direction   bidirectional
Arbeitsweise Operation   double pulse
Art Sort   SEL
Sockel Base   B12E
Fassung Socket   B12E
Nullposition Zero position   pin10 +6°
Zähl-Schritte Counting steps   10
Anzahl der Hilfskathoden Number of guides   2
Gasfüllung Gas filling   Neon
Röhrendurchmesser maximal Tube diameter max. mm 33,1
Röhrenhöhe maximal Tube height max. mm 88,5
max. Zähl-Geschwindigkeit Max. counting speed kHz 4
Betriebsspannung minimal Supply volt. min. V 400
Betriebsspannung typisch Supply volt. typ. V 475
Brennspannung typisch Maintaining voltage typ. V 192
Anoden bzw. Kathodenstrom min. Anode/cath. current min. µA 250
Anoden bzw. Kathodenstrom typ. Anode/cath. current typ. µA 325
Anoden bzw. Kathodenstrom max. Anode/cath. current max. µA 550
Netzteil Leistung minimal Power supply power min. mW 233,75
Anodenwiderstand typisch Anode resistor typical 680
Spannungsdifferenz zw. 2 Kath. max. Voltage between 2 cathodes max. V 140
Transferspannung minimal Transfer voltage min. V 35
Hilfskathodenvorspannnung minimal Guide bias volt. min. V 36
Hilfskathodenimpulsspannung Guide signal voltage pulse Vp -145+-15
Hilfskathodenimpulsspannung (Rechteck) Guide signal voltage rectangle Vp -80
Hilfskathodenimpulsspannung eff. (Sinus) Guide signal voltage eff. (sine) Veff 40-70
Hilfskathodenimpulsdauer minimal Guide signal pulse duration min µs 80
Hilfskathodenimpulsdauer (Rechteck) min. Guide rectangle pulse duration min. µs 60
Kathodenwiderstand maximal Cathode resistor max. 270
Resetimpulsspannung Reset pulse voltage min. V -120
Anschlussbelegung: Pinout:    
PIN 01 PIN 01   K0
PIN 02 PIN 02   K9
PIN 03 PIN 03   K8
PIN 04 PIN 04   K7
PIN 05 PIN 05   K6
PIN 06 PIN 06   K5
PIN 07 PIN 07   K4
PIN 08 PIN 08   K3
PIN 09 PIN 09   K2
PIN 10 PIN 10   K1
PIN 11 PIN 11   G2
PIN 12 PIN 12   G1
Kappe in der Mitte center cap   A

Pinout & Outline:


Document #050: ETL datasheet: GS10C tube
File: GS10C.pdf

Document #028: Ericsson book "Electronic Counting Circuits" - Dated 1967

Document #051: ETL datasheet: GS10C/S (CV2325) tube
File: GS10C-S_CV2325.pdf

Document #160: Raytheon Catalog SP-7649-360-20M - Dated 1961
File: Raytheon-cat01.pdf

Document #278: Magazine (unknown title): Ericsson ad: GC10D and GS10C tube
File: GC10D_GS10C.pdf

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