Heater voltage, I think you mean. How many are you running? Connect one heater pin (1 or 11) of each tube to 5V through a 47 ohm resistor, then the other pin of all of them together to ground through one resistor, of 20 ohms divided by the number of tubes. So for 4 tubes, use a resistor of 20/4 or 5 ohms - 4.7 ohms is ok. This raises the cathode enough above ground that the tubes blank properly, and having them all on the same resistor makes them all at the same potential. Check by powering up the heaters in a dark room. If you can see the heaters glowing even very dull red in total darkness, they're too hot, increase the common resistor until you can't see them.
I don't know why you would connect pin 2 to 25V. Maybe you mean pin 12, the grid. Connect it to 25V for permanently on, or switch it for multiplexing. On Monday, July 20, 2015 at 8:49:56 PM UTC-7, Chaos Hydra wrote: > > As the topic says, what do you guys do for the 1.5v for the anode voltage. > an AA battery? I was thinking to use two bias resistor and get it from my > 5VDC logic circuit input. Are there any better options to do this? > > Also, just double check my Russian, Pin 1 goes to 1.5V and pin 11 goes to > ground, right? pin2(for IV-17) goes to 25V and the rest pins are 25V > soucing inputs. > > Thanks in advance! > -- 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/9cca5bda-0d17-43fb-b90d-a5602a6c9483%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
