If there is one thing I like it is an answer like that :) I tried to request three samples of the supertex drivers, we'll see if they grant me some.
Thank you all for the comments, suggestions and solutions up to this point. I got more (practical) answers here in less than 24 hours than two weeks of forums got me. Op dinsdag 19 november 2013 23:38:09 UTC+1 schreef Spencer: > > Mine run from 18v low brightness to 35v for full brightness for the last 3 > years and have had no issues. > > Sent from my iPhone > > On Nov 19, 2013, at 4:16 PM, Gideon Wackers < > gideon....@student.uhasselt.be <javascript:>> wrote: > > Does anyone know whether it is a bad idea to go below the recommended > multiplexing voltage as mentioned in Adams comment?? > > Op dinsdag 19 november 2013 23:01:33 UTC+1 schreef Adam Jacobs: >> >> FYI David: >> On the clock that I built with IV-11 tubes, I initially started with >> an anode voltage of 60v; which is the median multiplexed voltage as per >> this datasheet: http://www.tromop.eu/cms/media/IV-11%20datasheet.pdf and >> a 1/6 duty cycle (16.67%). That clock was bright. Couldn't sleep in the >> room with it running, way too bright. I tried lowering the anode voltage >> supply to 50v, which is the minimum voltage listed in the datasheet for >> multiplexed mode. This helped, but not enough; not by a long shot. >> So, then I started lowering duty cycle. I can't remember how low I >> eventually took it, but I soon realized that I wouldn't be able to get >> the brightness as low as I needed without introducing some very >> noticeable flicker. So, I moved the voltage back to 60v and the duty >> cycle back to 1/6 and moved the clock to a much brighter location. Works >> perfect. :) FYI, this was with the filament @ 1.5vdc. I don't know >> enough about VFDs to know if lowering the filament voltage might have >> helped. >> I think that one of the features of Vacuum Fluorescent Display is >> brightness. To paraphrase someone wiser than me: If you find yourself >> thinking up more and more convoluted mechanisms for making it work, then >> that's often an indicator that you're barking up the wrong tree. >> >> -Adam >> >> On 11/19/2013 12:48 PM, David Forbes wrote: >> > >> > >> > Also, if your VFD is too bright, you can reduce the brightness by >> > reducing the duty cycle, which is done by turning off the anodes on >> > for some time in each cycle. >> > >> >> -- > 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/b8deb5d8-2cb6-47ad-87b2-999149b4b870%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/29f3b01e-31a7-4428-89ab-a7add002b654%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
