A few years ago I designed my own nixie bench supply, and I gave away the extra PCB's to interested neonixie members for the cost of shipping; no more boards exist.
The most useful feature is the adjustable current-limit, in my case I use a 10-turn pot to adjust the current, from 0 to 20mA, which is safe. It has a digital voltmeter (0-20V) across a 1K current-sense resistor to measure the load current directly (1V = 1mA). A 400mA supply can easily deliver a fatal shock (100-200mA), so be very careful. Let me know if you want more details on the current-limiter design, because you could easily add it to your supply. It's a simple high-voltage NMOS transistor on a heatsink. The voltage to the gate (roughly 0-24V) is set by the pot, and in-turn that sets the output current. There are a few other components for ESD protection. -- 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/929d79d7-51c1-4b18-81f6-be309317b024%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
