MEXICOWANDERER wrote:
If a person should reverse engineer some of these cheapo panel meters, they should find the same thing as I did, the comparator circuits are a world different between garden variety 2-1/2 - 3-3/4 digit meters and the 5.0 digit.
Which of those panel meters has a comparator? Op-amp(s) and A/D, sure, but what would those cheapo ones use a comparator for? They're certainly not doing A/D with discreet comparators. Most likely a cheap integrated 16 bit A/D.
It's not clear what you mean by "2-1/2 - 3-3/4 digit meters and the 5.0 digit" The meter you showed is a
4 3/4 digit one. What's a "5.0 digit" display?