"Qwerty" wrote
...
I have an application where I have 2 supply sources vary in range of 300mV-800mV.

I need a circuit that can take these 2 signals and output the average voltage of both. Can it be
done fairly simply?

thanks
Tim

If you mean this: (V1+V2)/2 = Vout then simply use 2 identical resistors in series, mid point is
output. If you need the average of each supply some integrator circuit with an opamp will work for
each supply, or simply a RC combination.

Al