That makes sense. So then (last question) that reasoning wouldn't apply to a non-inverting amplifier, correct? Since it only has one input tied directly to the op amp's positive terminal, a non-inverting amplifier is just as good as an inverting amplifier? Intuitively it seems to me like it...
Oh, excellent. Such a simple solution and works perfectly since the AD706 I'm using for the weighting sum has two op amps on the chip as it is.
I'd still like to know what the functional difference is between the two summers is, but that's more of a curiosity thing than a necessary question :)...
Hi,
I was wondering what the disadvantage of using a non-inverting summer was rather than using an inverting summer. I was told that inverting summers are better, but not why they are.
I ask because I'm making a circuit that performs a center of mass calculation:
(V1 + V2) - (V3 + V4) =...
Hi,
I've been having a bit of trouble finding a summer IC that can perform the following calculation:
V0 = V1 + V2 - (V3 + V4)
I found the LM324 which includes that calculation in its documentation, but it requires V1 + V2 > V3 + V4 since it's only got V+ and GND inputs. This...