Z502S Decatron

[Richard Scales]

I have a number of Mullard Z502S Decatrons in N.O.S. condition and would love to put them to good use though I am struggling to find details of any projects that use this kind of decatron apart from the simple spinner circuit on the tube-tester.com site.
Can anyone point me towards any projects that use this decatron type?

 - Richard

[Dekatron42]

There is this one that uses the Russian A101 dekatron: 
http://www.959radio.co.uk/dekatron.html

and you can adjust a few resistors to accomodate for the Z502S.

/Martin

[threeneurons]

The Z502S is the same as the Sylvania 6476 & Ericsson GC10C. There are all kinds of circuits that can use it. Here's my dekatron page:

https://threeneurons.wordpress.com/dekatron-stuff/

I just finished a analog meter circuit for dekatrons, that does not require a microcontroller. Its crude, but very simple, relatively speaking:

https://www.youtube.com/watch?v=q9y0P83Tv7Y

[Richard Scales]

Thank you for that, I have some of your spinners already - I shall investigate.

- Richard

[Jon]

If you were wanting something in the clock direction, you could look at adapting my Dekachron design (https://groups.google.com/g/neonixie-l/c/Fe1yqXzWa_I/m/3vj9yGqIBAAJ) for the Z502S. The board is set up for GC10B et al so you'd need to figure an off-board mounting for the Z502S and wiring to make them look to the circuit like GC10Bs. But from an electrical point of view I don't see any reason why it would not work fine.

Jon.