The output voltage of this circuit is approximately four times the supply voltage. The circuit is from an Electronics Now April 1995. The output current is very low.
We found this common application of the 741 operational amplifier in a 1977 documentation. The...
This circuit, found in an old 1967 publication, cuts the current from a source when the current...
This LED bar graph circuit was found in the October 1980 issue of Radio Electronics magazine. The...