We find this circuit in an Electronic Design of the 90s. The used integrated circuit admits equivalents and next to the diagram are given the formulas for the calculation of the components used.
The sophisticated signal tracker/follower with a JFET and integrated circuit 741 was found in a...
The gain of this circuit is given by the value of R1 that depends on the current in the...
This electronic switch published in the July 1970 Radio Electronics magazine allows the...