Okay else I will just take one of those step down converters off ebay http://www.ebay.com/itm/5-pcs-DC-DC-LM2596-Power-Supply-Step-Down-Adjustable-Converter-Module1-3V-35V-/130984321712?pt=LH_DefaultDomain_0&hash=item1e7f4622b0
For that price I can't go messing around with DC-DC converters myself and I can just match the voltage to my tubes. Do any of you use some sort of protection circuit for the filaments? Op dinsdag 19 november 2013 20:34:13 UTC+1 schreef Spencer: > > 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 < > gideon....@student.uhasselt.be <javascript:>> 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 neonixie-l+...@googlegroups.com <javascript:>. > To post to this group, send an email to neoni...@googlegroups.com<javascript:> > . > 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 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/1702c1ac-c89b-4245-8a72-4512fa4482b9%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
