Sorry, I don’t have any schematics for this thing, but I remember that the HV psu is based on this great video with some modifications. I have changed the BAV21 diode to BYV26C, connected pin 1,7, 8 directly to +12V without the 3 resistors and changed the value of the 2.2nF cap to another value (unfortunately I can’t see the value I have used). That worked for me.
https://www.youtube.com/watch?v=I2AdWwZpPzY 9:53 Am Dienstag, 27. September 2016 21:34:06 UTC+2 schrieb Dave Brown: > > Well done! > I'd be interested in the schematic for the high voltage psu- have been > toying with using the 34063 for that myself. > DaveB, NZ > > ----- Original Message ----- > From: "newxito" <[email protected] <javascript:>> > To: "neonixie-l" <[email protected] <javascript:>> > Sent: Tuesday, September 27, 2016 10:18 AM > Subject: [neonixie-l] First nixie clock > > > > > Hi, I’m new in the forum. I’ve finally managed to build my first nixie > clock. It’s a 6-digit clock with 4 x Z5660M and 2 x IN-8 nixies. > > I’ve decided to build the clock with direct drive so I’ve used 8 x 74HC595 > and 64 x MPSA42 transistors. > > The controller is a Atmega 328P, the 170V psu was made with a MC34063, > coil, transistor and mosfet. The psu seems to work fine, no audible noise > and the components remain cool. > > I had no idea how to shut down the 170V so I’ve used a relay to cut the > 12V > supply to the 170V psu. I’m sure there must be a better way to do this. > > Finally, I’ve added a GPS time sync, a motion sensor and a mp3 module, the > clock plays a sound every hour. > > I was surprised how easy it was to write the software. In the latest > release I’ve implemented a simple cathode poisoning prevention function > (just heard about this problem). For the next release I have planned to > use > the pps signal for a more accurate GPS time synchronization. > > I know, the whole thing looks like a nightmare… but it works :-) > > Regards > > -- > 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 [email protected] <javascript:>. > To post to this group, send an email to [email protected] > <javascript:>. > To view this discussion on the web, visit > > https://groups.google.com/d/msgid/neonixie-l/7ed97fca-9de1-4a50-8403-f3f69cbdf33f%40googlegroups.com. > > > 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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/a6d18e00-995f-49a9-b13f-2aaf168f9a68%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
