Expert engineers understand no one opamp is good for every circuit application. |
Now this waveform is added to the negative part of the squarewave generated from Q1 by Opamp Q2 which is used as an inverting summing amplifier to obtain waveform. |
The opamp for the stage is the NJM2068L, which is as good as low cost opamps get. |
The unit does not have individual opamp buffers for each analog input as some more expensive units do. |