The reference voltage for this circuit can be selected digitally. The circuit is from Radio Electronics dated February 1981. The 741 must be powered by a symmetrical source.
Found in a radio amateur magazine of the 1980s, this circuit uses components that can still be...
This is the first transistorized circuit published in the Radio Electronics magazine from over...
This circuit was found in a 1968s American. Transistors are of general purpose and the input is a...