Dieter's
B12E Dekatron Spinner
last update (and finished): August-29-2008

Back to Dieter's Nixie Tube Page
Email to Dieter

What is a Dekatron spinner?
A Dekatron spinner displays a spinning dot by using a vintage 'Dekatron' style glow-transfer counting tube.
The colour of the dot depends to the gas the tube is filled.
Neon filled tubes display a red-orange dot.
Argon filled tubes display a purple dot.
The spinning frequency depends to the mains voltage the spinner is connected to and to the counting steps of the Dekatron.
If the spinner is connected 50Hz and the Dekatron is a 10-way counter the dot spins with 5 turns per second.
If the spinner is connected to 60Hz the dot spins with 6 turns per second.
If the spinner is connected 50Hz and the Dekatron is a 12-way counter the dot spins with 4.17 turns per second.
If the spinner is connected to 60Hz the dot spins with 5 turns per second.

An animation of a Dekatron spinner:

You can find more information about Dekatrons here on my Dekatron page.

The main idea of this project was to develop a simple Dekatron spinner for all known Dekatrons with B12E base.
I took my K8A Deaktron spinner circuit and modified it to this purpose..

After my modifications I came to this circuit:


The circuit works with 230VAC/50-60Hz and 115VAC/50-60Hz.
All B12E Dekatrons I know will work in this circuit.
These are the following:
6476; 6910; 6476A; CK6476; CK6910; CV2325; GS10C; GS10C/S; GS10D; GS10E; GS12D; M2465-402; M2465-403C; Z502S.

Here you see the layout of the circuit:

Here you see the finished board (not assembled):

Here you see the spinner with different tubes:

6476 (Sylvania)

Z502S (Mullard)

CK6910 (Raytheon)

GS10C (ETL)

GS10D (Hivac)

GS10D (ETL)


GS12D (ETL)


GS10C/S CV2325 (ETL)


The bottom side of the board:

The tube is mounted in pin receptacles, so it's no problem to replace it:

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:


The wonderful purple glow of Argon filled tubes:
a long opening time of the camera:

a short opening time of the camera:

by night, with  long opening time of the camera:

An animation of a spinning dekatron:

You can download the connection-instructions here.

Attention!!!!
This circuit generates high voltage!!!

DANGER!!!!
Attention!!!! This circuit generates high voltage!!! Do never touch the circuit while it is connected to the AC line. Before you use the circuit mount it in a closed housing! I am not liable for any damages caused to someone’s health.
Dekatron Spinners produce high voltages that can be fatal.
I disclaim any responsibility for injury as a result of using this circuit!! 
All risks and damages, incidental or otherwise, arising from the use or misuse of this circuit are entirely the responsibility of the user. 
DANGER!!!! HIGH VOLTAGE DEVICE!!!!!!

The author assumes no liability for any incidental, consequential or other liability from the use of this information. All risks and damages, incidental or otherwise, arising from the use or misuse of the information contained herein are entirely the responsibility of the user. Although careful precaution has been taken in the preparation of this material, the author assume no responsibility for omissions or errors. 

This Project is finished
Thanks for reading.

Back to Dieter's Nixie Tube Page

eMail to Dieter
Impressum & Datenschutz