I suggest you add a power-on indicator; it only requires a few milliwatts and it could save your life.
Also, it's wise to put a large resistor across each DC supply to discharge the capacitors, especially the HV ones, when the power is off. Nixies will extinguish around 120-150V, so just because they are dark does NOT mean it's safe to go poking around. A 100K 1/2 watt resistor can be used for supplies up to about 200V. At higher voltages it becomes a tradeoff of wasted power vs. discharge time. The discharge time is about 5 time constants, so T=5RC, where T is in seconds, R is in ohms and C is in Farads. Sometimes it's easier to use megohms & uF. I've gotten ultra paranoid with my next project ( bench power supply for nixies & dekatrons), so each HV cap in the HV tripler has it's own fuse, reverse-polarity diode, bleeder resistor, and neon-bulb to indicate dangerous voltage (>60V). -- 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/8a24d62a-cdad-473d-bd86-b02d36bae90e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
