Yup I am aware that the voltage requirements are high and current a lot lower than standard Nixie type tubes and as you correctly say the circuit above will not do that. Hence the tippler comment I made in the original post.
Leaning now towards the 2nd circuit now by Jan Rychter .. it is well documented. The circuit above is kind of strange with that setup on the sense resistor input, makes no sense (pun intended) to me :-) Re: flyback... no not for me ... pain in the backside all round with the transformer setup needing special windings etc. Simulation software is one thing .. but from my research it seems that layout is probably more important. That, and the correct selection of inductor and mosfet or transistors. I have a few different supplies from various sellers and most of them have "voodoo" in them. Michael Moorrees (threeneurons) have been the best for me as I can get all the components and don't have special custom inductors in them. He is also a good teacher and has good explanations of what is going on in his circuits. But .. they are copyright. Which is fair enough. This quest is because I don't just want to buy a 3rd party "unknown" design and put it in my project because if you do that you are then locked in and have no recourse should the maker stop production. I also would like the option of selling stuff should I decide too .... Thus my search for something opensource. Power supplies I have tried. Nice little supply with no noisy windings. Voodoo inductor, scratched off critical component values. https://www.ebay.com.au/itm/SHV5-5Vin-400Vout-Max-Adjustable-HIGH-VOLTAGE-SUPPLY-MODULE-NIXIE-TUBE-ERA-/141837951981?hash=item21063363ed&_uhb=1 Beast power supply ... easy to break (have fried 2 so far.... full of voodoo including a custom chip (which you can get separately) Great though for driving lots of IN-9's (to a point as these suckers really chew up the amps.) https://www.ebay.com.au/itm/DC-12V-24-to-DC-200-450V-70W-High-Voltage-Converter-Boost-Step-Up-Power-Supply/282761919533?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 Very nice supply with a custom inductor. No noise. https://www.ebay.com.au/itm/Nixie-power-supply-1363-x-2-/140964710395?hash=item20d226c7fb&_uhb=1 Another by the same guy but very noisy (sounds) at higher loads. Also a custom inductor. https://www.ebay.com.au/itm/Nixie-power-supply-1364-x-2/140964710736 People want to protect their work... which is understandable. -- 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/f99901ba-81bf-4925-a68e-b6f441a26f72%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
