Let's see if this works, picture should be here: http://xiac.com/Images/NixieComp3.jpg
I am still in doubt about the watch band size, I think 26mm is too big, so I am thinking of 22 or 24mm. Best regards, Michel On Jan 29, 12:01 am, jb-electronics <[email protected]> wrote: > Hello Michel, > > welcome to the group! :-) > > Your wristwatch sounds very interesting, is there any chance to see some > pictures without joining evil? ;-) > > Best regards, > Jens > > > > > > > > > Hello everybody here in the neonixie group. > > > My name is Michel, dutch from origin and living in Australia for > > nearly 9 years now. > > I am an electronics and software engineer by trade, re-design > > electronic control systems for mainly pharmaceutical tablet counting > > machinery. > > These machines have been around for a while (over 40 years) and yes, > > the first electronic ones used nixie tubes to display the numbers. > > I got a couple of those old counters, and I am actually very impressed > > with one of them which is entirely made up of transistors (transistor > > BCD counters and transistor BCD to Nixie decoders). > > > I am also fascinated by wristwatches since I was like 5 years old. Had > > a small repair shop called "Kopriso" when I was 12 (see "Kopriso > > Watchmaking" on facebook). > > At some stage I came across Jeff Thomas and also David Forbes nixie > > watches and I thought it was a nice concept, but not very practical > > because of the size of these watches. I also think the watch enclosure > > from DF doesn't really match the beauty of the tubes and for sure > > there is potential in improvement regarding battery life. > > > I played around with the tubes and batteries and found a way to reduce > > the size, improve the design and get better battery life at the same > > time. This design is now in a concept stage, I should receive the > > boards within a few weeks to try it all out for real (see "Nixie > > Watch" on facebook). > > > A mayor struggling point is the high voltage converter which, like DF > > mentioned for his design, only has a 50% efficiency. I got 2 different > > designs to try out, one should run between 75 and 85%, the other > > between 80 and 90%. This is only possible using very specific > > components, so I am really looking forward to do the final > > calculations on the results. > > > Another project I am working on consists of the conversion of 2 old > > batch counters (one has 4 tubes, the other 3 tubes) and let them work > > together to form a clock with a 0.1second accuracy. This is of course > > much easier than the watch, but just as exciting! > > > Anyway, will also browse through your projects here in the group and > > see how creative you all are! > > > Best regards, > > Michel -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
