If you have the skills and can get your hands on SMD components, you can assemble this small amplifier. We found it in the Radio Electronics Experimenter special edition from 1990.
This circuit was found in the November 1993 issue of Electronics Now magazine. It uses...
This circuit was found in a Popular Electronics from the 90s. The effect circuit uses components...
In the circuit shown in the figure, when the input voltage rises to 27 V, the TL431 triggers the...