This low-power benchtop circuit has an output for external use and other features. The circuit is from the 1995 Encyclopedia of Electronic Circuits Volume 5.
This loop antenna was found in a 1990s documentation. The circuit includes a field strength meter. The...
If the reader has an old MSX still working, it can be used as a microcontroller for your robotics...
This transistorized stage of an old documentation aims to increase the sensitivity of a...