You may need a higher impedance meter to measure high voltages, especially low current supplies as the typical meters will pull the measured voltage down. If you use a 1 GOhm resistor to make a voltage divider, it's much easier to measure high voltages more accurately on these tiny supplies.
On Thu, Sep 4, 2025 at 2:34 AM 'JBro63' via neonixie-l < [email protected]> wrote: > Hi all. > > I'm looking to incorporate a 12v -> HV power supply in to a PCB design > rather then use the excellent external 6300/8200 Omnixie's. As a starter, > have sourced the components for the threeneurons NK02. The only change was > replacing R5/RX with a single 9.1k resistor. > > Once assembled (all components soldered) it seems to work ok - lights up a > neon or nixie as expected. I'm unable to get a reliable reading of the > output voltage using a multimeter, the values are all over the place > sometimes exceeding the 600v max of the meter which concerns me a little. > > Anyone have any tips or insights on this behaviour? > > The NK02 design is from this > <https://threeneurons.wordpress.com/nixie-power-supply/hv-supply-kit/> > page. > > Thanks. > > -- > 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 view this discussion, visit > https://groups.google.com/d/msgid/neonixie-l/e0176390-9db5-4a88-bf6b-5d25043707c6n%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/e0176390-9db5-4a88-bf6b-5d25043707c6n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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 view this discussion, visit https://groups.google.com/d/msgid/neonixie-l/CAJD4P-jVB_q_TSMGpHwLmvcxaGQGTZ_t%3D3VyPEW_cLsG_nS%3DsA%40mail.gmail.com.
