In the diagram from the November 1999 Electronics Now magazine we have the way to improve both the gain and the stability of the LM386 amplifier.
Found in a 90s Popular Electronics, this circuit excites a 40 kHz ultrasonic transducer. The...
The purpose of this circuit is to cut the peaks of a sinusoidal signal so that it is close to a...
We found this touch switch in a Popular Electronics from the 80's. The circuit can also be...