Perhaps you can post the code that does the multiplexing - it may shed some light on this issue. By the way, there's nothing wrong with multiplexing - and it's not that hard to get it right, just follow a few simple rules like the dead time, and you also haven't mentioned the frequency yet, which should probably be around 200Hz (you may have set it too high). In my opinion it's a complete waste of drivers not to multiplex, especially with a relatively high duty cycle, like 1/3 (e.g. when you have 6 tubes and you switch 2 at a time). Yours is 1/6, so you need to overdrive the tube a bit more, but other than that there's nothing wrong with it.
On Wednesday, February 25, 2015 at 12:45:43 PM UTC+1, joenixie wrote: > > Hmmm... interesting observation Pete, are you talking about changing R21 > or R22 to 10K? I chose 100K because I have them in my NixieNeon clock. > > -joe > > On Wed, Feb 25, 2015 at 2:48 AM, petehand <pete...@gmail.com <javascript:> > > wrote: > >> Just move R22 etc to the other end of R21 etc, on the base of the PNPs. >> Where they are now, those resistors are are doing nothing but wasting >> power. When the NPNs turn on they're going to draw 1.6mA and drop 160V >> across the 100k resistors R21 etc. You need no more than 3V to turn on the >> PNPs, so in theory you could drop the values of R22 etc to 2.2k, but I >> suggest 10k is more suitable. 100k is way too high and may as well not be >> there. >> >>> -- >> You received this message because you are subscribed to the Google Groups >> "neonixie-l" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to neonixie-l+...@googlegroups.com <javascript:>. >> To post to this group, send email to neoni...@googlegroups.com >> <javascript:>. >> To view this discussion on the web, visit >> https://groups.google.com/d/msgid/neonixie-l/77035e01-fd3f-4085-bc63-83deae194f39%40googlegroups.com >> >> <https://groups.google.com/d/msgid/neonixie-l/77035e01-fd3f-4085-bc63-83deae194f39%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/2775309b-3b58-4591-9578-f986c12adc57%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
