@nixiebunny - I will give this a shot. I wonder if this could be the cause?
@Michel - Yes, it's drawing 500mA total current (both lv and hv), so I'll isolate the LV and check it with a meter to see how much current it is drawing next time I get a chance (hard to do things around the holidays) Also, you're right about the capacitor, I looked at thge schematic I used for the 555 nixie driver, and noticed it's only supposed to be a .47uF cap. I'm using a 220uF, and what was I thinking? This will be the first thing I try (is replace the cap). I'm using a lab power supply if that makes a difference. @mikegregg - I don't have any resistors leading to the base of the transistors. The datasheet for the transistor array I'm using says they have a 2.2k on the base. Quoting from the datasheet, "The SN75468 has a 2700-Ω series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS." -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/iSvnusxt9poJ. For more options, visit https://groups.google.com/groups/opt_out.
