Neon Ring Counters

Cold-cathode counting — how a glowing dot counts, from dekatrons to a modern build.

Volumes

1. Vol 1 Overview & the Cold-Cathode Counting Idea
2. Vol 2 How a Neon Lamp Works
3. Vol 3 Which Tubes to Use
4. Vol 4 The Ring Counter — Theory of Operation
5. Vol 5 Dekatrons — a Whole Ring in One Envelope
6. Vol 6 Frequency Division & Accuracy
7. Vol 7 Drift, Ageing & How to Mitigate Them
8. Vol 8 High-Voltage Supplies — the Traditional Way
9. Vol 9 High-Voltage Supplies — the Modern Way
10. Vol 10 Capacitors & Resistors — Choosing the Passives
11. Vol 11 The Burn-In / Ageing Jig — Build It
12. Vol 12 Worked Examples & Applications — a Gallery
13. Vol 13 Build It Yourself — a Reference Neon Ring Counter
14. Vol 14 Safety — the ~100–450 V Discipline
15. Vol 15 Cheatsheet & Glossary