Only on longer tubes will you truly notice gradient so you might see it if you do 4 or 6 in a series.
Sent from my iPhone > On Nov 19, 2013, at 8:42 AM, Gideon Wackers > <[email protected]> wrote: > > Thank you for your reply, sadly the HV5812 is SMD and I am going to do this > on simple strip/hole PCBs. But you are using two tubes in series on 5 volt so > that leaves about 2 volts for the resistor. My plan is to hook them all up in > series (4 tubes) so I require 6 volts which can be delivered by the 7806. The > result is (at least in my head) that I do not even need a filament resistor > because I require no voltage drop. > > But I think that I am going to drive them at a lower than 60 volt supply > because again someone mentions that 30-40 volt is bright enough. I think I > will use a simple DCDC convertor off ebay to make 35 volt ( > http://www.ebay.com/itm/XL6009-DC-DC-Adjustable-Step-up-boost-Power-Converter-Module-Replace-LM2577-/130987148386?pt=LH_DefaultDomain_0&hash=item1e7f714462 > ) just for simplicity because I am not that much of a software guy. Maybe > this allows for easier driving methods such as a transistor array like the > uln2803? > > I also hear a lot of different opinions on DC or AC filaments, You are using > DC (but only two tubes in series), do you notice any gradient? > > > -- > 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 post to this group, send an email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/9fd4e8e1-8c62-47ad-8807-d2bca4078b90%40googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/DA0E666B-3BF0-4C80-991F-363E55D4557C%40yahoo.com. For more options, visit https://groups.google.com/groups/opt_out.
