Log in/out

Dekatron Nixie Clock

JavaScript is disabled!
To display this content, you need a JavaScript capable browser.

YouTube User SLvik78

John found a great dekatron based Nixie clock on YouTube that I wanted to re-post here.  All of the timing is derived from the mains line at 50Hz.  The dekatrons divide the time base in to seconds, minutes, and hours.  I've contacted owner and others have as well to see how he performs the "divide by 5" function to get 1pps and the "divide by 6" to convert 60 seconds in to a minute.  You can see the jump/division happen at 1:20 seconds in the video.  I am not sure if this is simply a matter of wiring the dekatrons differently or there are other components in use that are not visible.

If you have an idea how this works, please leave a message in the comments and I will update this post.

UPDATE 7-7-2010:

Be sure to read SLvik's response in the forum.  He shared a photo of the back of the clock and confirmed The 50Hz mains is rectified and then divided down from 100:10 and 10:1pps by the two dekatrons at the bottom.   Very nice work!

Dekatron Clock Rear

 

Lastly, be sure to check out Kahlo's link for his schematic of a 50Hz divide by 5 & 10 design.  This help quite a bit: http://kahlo.redirectme.net/~kahlo/forum_jogi/Dekatron_Zeitbasis.png (thanks for sharing!)

 

Translate

English French German Italian Portuguese Russian Spanish

in-17 and b7971 nixie clocks

Nixie Clock Kits