Soviet-Style Clock Features Custom Nixie Tubes and Thyratrons
A unique clock design that marries vintage technology with modern aesthetics has emerged, featuring homemade Nixie tubes combined with Soviet-era cold-cathode thyratrons. Created by inventor Changliang Li, this “Soviet-Era Style Clock” showcases an innovative approach to timekeeping while paying homage to retro electronics.
The clock’s striking display relies on the vivid glow of Nixie tubes, but it is the MTX-90 cold cathode thyratrons that serve as the key logic component. These tubes function similarly to neon lights but include an additional trigger electrode, which this particular circuit does not utilize. The thyratrons are ingeniously arranged in a loop counter, converting the standard 50 Hz mains frequency into seconds, minutes, and hours.
Technical Insights and Innovations
The circuit design used in Li’s clock is not entirely original; it draws inspiration from well-documented electronics literature. Specifically, the version implemented in this project is attributed to PA3FWM, a notable figure in the electronics community. The Nixie tubes themselves are produced by Sadudu of iNixie Labs, which offers a fascinating glimpse into contemporary tube manufacturing processes. In a video showcasing the project, the tube-making process is revealed, highlighting the use of a fiber laser to create glowing elements, which are then assembled using a lathe-like device.
One of the intriguing aspects of Li’s clock is how it ensures reliable operation of the cold-cathode tubes. These tubes rely on ambient light or background radiation to activate, as the trigger electrode is left unconnected. To enhance the reliability of the switching mechanism, Li incorporates a surplus smoke detector source to guarantee sufficient ionization. There is a mention in the video that the MTX-90 may have originally been seeded with radioisotopes, a claim that lacks verification in current sources.
Aesthetic Appeal and Community Engagement
The outcome of this project is both visually appealing and captivating. The clock operates with a rhythm that is almost hypnotic, drawing attention to its vintage charm. Viewers can witness the clock’s functionality in action starting at 3:37 in the project video, where its unique design is on full display.
For those interested in exploring the use of neon lamps and the historical significance of the Soviet MTX-90, a previous in-depth article provided further insights into this niche area of electronics.
Li encourages enthusiasts to share their own innovative projects, emphasizing the importance of community engagement in the world of DIY electronics. The combination of historical technology and modern creativity exemplifies the spirit of innovation prevalent among hobbyists today.
