What spence says, and keep your wiring short esp to the nixies. A 1000u cap right at the power input wouldnt be bad either. If the issue occurs at a certain ht voltage then maybe your reaching the breakdown voltage of the switching fet/transistor, I've had this before. Another thing is the inverter high voltage supply inductor could be saturating, this will happen suddenly and when it does it'll pull lots more current and possibly deck the supply to your logic causing the rtcic to freak out, if the inductor is warm then thats a sign this is happening.
On 13 May, 15:17, Spencer W <upnxwoo...@yahoo.com> wrote: > You want a small capacitor, usually 0.1uF on each power supply of the ic as > close as possible to the pins. > > So on the ds1307, you want it on pin 8 as close as possible. > > This image shows what I mean, > > This goes a little deeper into why its > needed,http://hackaday.com/2008/09/29/parts-01uf-decoupling-capacitors/ > > Sent from my iPhone > > On May 13, 2013, at 6:49 AM, nix <daniels.ser...@gmail.com> wrote: > > > > > not sure. There is a capacitor on the highvoltage power supply. is this a > > decoupling capacitor? > > > Am Montag, 13. Mai 2013 13:45:46 UTC+2 schrieb Spencer: > > >> Do you have decoupling capacitors on all ic's? > > >> Sent from my iPhone > > >> On May 13, 2013, at 6:19 AM, nix <daniels...@gmail.com> wrote: > > >>> Hello I just build my own Nixie clock with input from Arduinix.com and a > >>> power supply from ledsale (Build a nixie power supply - LEDsales) > > >>> Attached find the circuit and the pcb from fritzing. The clock works fine > >>> but when I adjust the high voltage with R36 the ds1307 module from Twig > >>>http://shop.boxtec.ch/twig-ds1307-p-40355.htmlstarts to flicker because on > >>>the serial interface it shows strange numbers like 165:165:85. After a > >>>while it does not return the time over the i2c interface at all. A restart > >>>of the nixie clock starts showing the time again. With an oscilloscope I > >>>can see that after a certain position on R36 the SDA puls disapear and it > >>>shows a flat line. I think it is at high level. Not so shure how to read > >>>the oscilloscope. > > >>> Any Idea why? I don't see a direct link from the high voltage power > >>> supply to the 2 wire interface. (see attached circuit) > > >>> Kind regards > > >>> Sergio > > >>> -- > >>> 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. > >>> To post to this group, send an email to neoni...@googlegroups.com. > >>> To view this discussion on the web, > >>> visithttps://groups.google.com/d/msg/neonixie-l/-/jgtKRhvfY7IJ. > >>> 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 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, > > visithttps://groups.google.com/d/msg/neonixie-l/-/TaAzQP23KfEJ. > > For more options, visithttps://groups.google.com/groups/opt_out.- Hide > > quoted text - > > - Show quoted text - -- 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. For more options, visit https://groups.google.com/groups/opt_out.
