Found in old American documentation, this receiver transmits signals via the power grid. We can use it on links or remote control. The components admit equivalents.
This small circuit for the medium or short-wave range, depending on the coil, was found in a...
This circuit from a 90s Electronics Now, uses a 4010 gate as a signal amplifier. The circuit...
Found in 1980s documentation, this circuit produces 1 Hz flashes. The op amp supports equivalent. R5...