But they are beautiful! On Sun, Jul 25, 2021, 11:48 AM gregebert <gregeb...@hotmail.com> wrote:
> Just to be safe, I suggest you measure the voltage drop across the anode > resistor, and use Ohm's law to compute the current. For an 8.2K anode > resistor, and a current of 6mA, the voltage-drop should be around 50V. If > the voltage is below 40 volts, your anode current is too low because it's > less than the datasheet minimum-current spec of 5mA and you run the risk of > cathode poisoning. > > I use an actual current-regulator in my designs, rather than just a > resistor, so that variations in tube characteristics and supply voltage > dont affect the current. > > On Saturday, July 24, 2021 at 3:30:00 PM UTC-7 MichaelB wrote: > >> Still have to build the taller colon towers, but I was pleased to see >> that these work as possible replacements for the real thing. I used 8.2K >> Anode resistors vs. the 10K's Thomas used to recommend for the Z568's. And >> since they're taller they require a taller top, as an aside. >> >> [image: 8E6AD098-89D0-4C9C-A2CE-2204AFC1AACB_1_105_c.jpeg] >> >> >> >> >> >> -- > 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 view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/603ee847-05a6-4541-a50b-90e0e0b097dan%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/603ee847-05a6-4541-a50b-90e0e0b097dan%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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/CAJD4P-iK6kJVsLqzH%3DOPQdhMQ96RqQniQLu9MtVMZMv2pu2JeQ%40mail.gmail.com.
