The problem is that if the segment currents stated in the Burroughs datasheet are summed-up for various characters, many characters exceed the max-spec for anode current. However, the average character-current is on-par with the max anode-current spec. Unfortunately, we'll never know what Burroughs intended.
I took a different approach and gathered a lot of data on my 7971's, including a guesstimate of the current that gives good visual illumination for each segment. When I scaled-back the spec-value for segment currents to get most characters within the 22mA max anode-current spec, I found that the 'visually good' current was on-par with the scaled current. What I ended up with is segment currents that are visually good, and within the max-anode-current spec limit (slightly over for 2 characters). Hopefully I will have time this weekend to finish my board and try it 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/f007eee7-e872-4610-a9a5-319383d63453%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
