Multiplexing Nixies

dwight elvey dkelvey at
Mon Mar 5 23:34:19 CST 2007

>From: Jules Richardson <julesrichardsonuk at>
>Does anyone know if multiplexing Nixies will significantly reduce their 
>lifespan? Or does it in fact help versus "permanently on as needed"?
It is not a good idea to multiplex Nixies. They don't always strike
exactly when the voltage is applied. This means you can't go too
fast. Also, if the current is too high ( not just the average ), it
causes the gas to heat up too much and it changes the ionization.
This causes a more distructive violet glow that will eventually
cause the bulb to get contaminated by blasting the electrodes.
Unlike LED's, running them at too low a current doesn't just
make them glow less brightly, it tends to make them glow only
over part of the electrode.
Most applications use one driver per Nixie.

Rates near 39yr lows!  $430K Loan for $1,399/mo - Paying Too Much? Calculate 
new payment

More information about the cctalk mailing list