Well it seems my original post caused some interest. I was aware of the brightness issues, its a similar story with leds. I've messed around with 4 or 5 types of tube but never got any audible sounds from them, I have with switching supplys, but later designs I use are 30kc and up, I've just been messing with a minimal boost supply that generates 200v from 5v and the drive waveform comes straight off the microcontroller, I even have a brighness control built in the software. To conclude then it sounds like there is no major issue with muxing tubes, so long as there isnt so many tubes that the current has to be wound up so much that the tubes max isnt exceeded. I'll remember this and if I decide to have a load of tubes on display then I'll probably still multiplex them but in groups rather than an entity.
On 20 Sep, 23:07, "Tidak Ada" <[email protected]> wrote: > The noise made by coils may easily be reduced by the use of PlastiDipR > > eric > > _____ > > From: [email protected] [mailto:[email protected]] On > Behalf Of kay486 > Sent: donderdag 20 september 2012 22:57 > To: [email protected] > Subject: [neonixie-l] Re: Why is multiplexing nixie's bad > > I have a multiplexed Z566M clock and it makes quite a lot of noise. I think > tha the noise is produced by the cathodes, because they arent completely > fixed in place by the spacer rings, so they tend to buzz when they are > multiplexed. Thats just my guess though. > > On Thursday, 20 September 2012 02:39:22 UTC+1, dr pepper wrote: > > So why is multiplexing a bad idea, and static displays make tubes last > longer?, does multiplexing accelerate cathode poisoning or something? > I have 3 or 4 prototypes I've put together and they all use > multiplxing, even the single tube ones use pwm as a brightness control > (and so probably inherit the 'bad habits' too). > > -- > 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]. > To view this discussion on the web, > visithttps://groups.google.com/d/msg/neonixie-l/-/fhVCo8sBnjMJ. > For more options, visithttps://groups.google.com/groups/opt_out. -- 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 https://groups.google.com/groups/opt_out.
