That is a one tube clock. You don't need to switch the anode. On Thursday, May 2, 2019 at 10:43:20 AM UTC-4, gregebert wrote: > > Switching the anodes is what multiplexing does, the advantage being that > you can share the cathode logic across several tubes. But with savings, > there is also a hidden cost: You must run the anode current higher for > multiplexed operation versus direct-drive. If the tube is specifically > designed to support higher peak-current for multiplexing, then there's > minimal risk; I recall some Burroughs tubes state in the datasheet not to > use multiplexing. > > I've done a number of clock designs, all of them direct-drive. Cost is a > secondary concern; maximizing the life of the almost- irreplaceable nixie > tube is the overriding goal. With direct-drive, you dont need to switch the > anode. However, I have some designs that use anode current-regulators which > is basically a switch that is not fully-on. > > Ghosting only occurs with a muliplexed display, so if you are concerned > about it, be sure that your design has programmable blanking-time, > refresh-rate, and on-time. You will have to experiment to get the best > results. >
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