Found in a radio amateur magazine of the 1980s, this circuit uses components that can still be found easily. The circuit is for NiCad batteries.
This circuit was found in an Electronics Now of 1988. The circuit is still current, and the power...
With this name, we found this electronic stethoscope with a coal microphone in a 1957 Raytheon...
This transistor amplifier with complementary symmetry configuration can provide approximately 1 W...