Thanks for your reply! Yeah I mean pin 12 to 25 VDC, mis-type. So for the first part. I will have 8 tubes. So I put 47 ohm in series with pin 1 to 5 v and all 8 pin 11s together and through a 20 ohm. Well, everything gets better when my dmm gets here. The method of testing you said is great! I will keep it in mind.
On Tue, Jul 21, 2015 at 4:43 AM, petehand <peteh...@gmail.com> wrote: > 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 a topic in the > Google Groups "neonixie-l" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/neonixie-l/-6Tt92gj_OY/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > neonixie-l+unsubscr...@googlegroups.com. > To post to this group, send 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 > <https://groups.google.com/d/msgid/neonixie-l/9cca5bda-0d17-43fb-b90d-a5602a6c9483%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- Cheers Kejian Lin "Robert" -- 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/CAN8Xmy5gv3Jm11NjDLU1HE9fSs1AP_pUOpRgteNsaEC8TNsqmA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
