Have you tried to use a small capacitor 10-100pf on top of the resistor (the high value one, 1.5Meg or so) thats forming a voltage divider for the feedback? This can really help.
What kind of output cap have you used? -- 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/4f380743-c1dd-4257-a262-ac7cbe232ba5%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.