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+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/b8deb5d8-2cb6-47ad-87b2-999149b4b870%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
