although it's quite basic and simple stuff --
then some while ago i actually managed not to see it as such , in a particular
app , where the difference of the input voltages had to be referenced to Neg-Rail
( what made it so hard to see is that usually you work with 1 signal at the time . . .
here we had 2 inputs . . . )
a long story short ►
fig.1
the S_Ref can be whatever : GND , Neg_R (as in my case) , Pos_R , e.c. ...
fig.2
...
...
...
Sometimes the simple things are too simple to see
then some while ago i actually managed not to see it as such , in a particular
app , where the difference of the input voltages had to be referenced to Neg-Rail
( what made it so hard to see is that usually you work with 1 signal at the time . . .
here we had 2 inputs . . . )
a long story short ►
fig.1
the S_Ref can be whatever : GND , Neg_R (as in my case) , Pos_R , e.c. ...
fig.2
...
...
...
Sometimes the simple things are too simple to see