We found this circuit in the June 1991 issue of Radio Electronics magazine. The circuit can be used with a resistive sensor or in demonstrations.
This circuit came out in an American magazine that no longer exists. It's the Electronic...
This circuit can be added to any audio amplifier design, consisting of a good tone control with an...
Using a 741 op amp with symmetrical source, this circuit was found in a 1982 documentation. The...