Karlsson Nixie clock
![Karlsson-front.jpg](Karlsson-front.jpg)
Karlsson clock and nixie tubes in the dark.
This clock uses 6 ZM1080 nixies that have had their orange coating removed. On the inside, there is a microcontroller for timekeeping and control. I haven't yet opened mine up, but according to jeff Thomas, who has autopsied his Karlsson nixie clock, it uses a time base separate from the microcontroller's clock. The HV for the nixies is said to come from a simple "reversed" power transformer.
I was given this clock as a gift from my employer. A thoughtful and a very well chosen present.
Copyright © 2004 by Onno's E-page published 2004-05-16, last updated 2004-06-02