I am looking for an article or short description of a general purpose Instrument condition circuit.
When I was taking my electronics classes (1980's) I recall a diagram that showed an opp amp that had +- offset and variable amplification. I have looked in my library and all I can find is specific applications. The references I have are all too complicated... i.e. temperature compensation etc.
I am hoping to have a fairly crude circuit that will use 749's or something with perhaps just two or three other components to buffer many sensor lights with varing voltage trip points (and scales). I would like to use one circuit many times over with predictable component values.
Thanks for the help!
JZ