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.
Higher power of an LM380N that has a power of 2.5 W can be obtained with a bridged configuration. The power...
This circuit is a traditional timer setting using 555. We found this setting in a year 2000...
This simple circuit with transistors turns on a small lamp when it gets dark. The sensor is an LDR...