Thats interesting, I'm using 4 by IN1's, but not a a101 I have a OG3 single pulse dekatron. I have a supply breadboarded, it puts 210 out for the nixies, I use a 12k anode resistor, befroe you shout my tubes are multiplexed by 5 (4 tubes and another slot for some neons). My supply uses a 555 I like things simple, the supply produces and regulates 210 and then theres a cockroft walton voltage doubler to give me 420 for the dekatron. It works well, the only thing I noticed is that when the IN9 neon bargraph gets toward full scale the dekatron glows changes just a smidgeon, not because the supply has bottomed I think theres some noise affecting it, but its not noticeable enough to worry about. The clock is looking good so far, I'd like to find a way of making the power supply quiter, it takes out the 60kc msf receiver completely when it fires up, not so much of an issue with my project, the nixies are off most of the time, the system responds to a standard tv remote control and fires up the display for 10 secs on command.
On 23 Jan, 11:56, Jan Rychter <jrych...@gmail.com> wrote: > On 23 sty 2012, at 04:10, threeneurons wrote: > > >> Although, if you are using a voltage doubler to get your HV supply, you > >> will find that the supply sags as current increases.... > > >> -Adam W7Q > > > Yep, the ripple voltage increases dramatically, per multiplier stage, > > given the same current draw. But the nixies are the devices that draw > > the most current, with the dekatron drawing not even a milliamp. So > > make the nixie voltage straight out, without the multiplier, then > > double or triple the voltage for the dekatron. ie, 180V nixie & 3x -> > > 540V dekatron, or 220V nixie & 2x -> 440V dekatron. > > I built a PSU with a voltage doubler (200V doubled to get 400V). With 1mA of > output current on the doubled 400V output the ripple isn't a problem at all. > I think it was around 10V P-P. > > --J. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
