This circuit was found in American documentation from 1966, but it can be assembled with a modern equivalent transistor. The circuit is based on a mechanical tuning fork with a coil feedback system.
This remote control receiver via the power grid appears elsewhere on this site from other sources....
May 2017 - Torex's XBP14E5UFN, an array of TVS circuit protection diodes with only 0.8 pF of...
This circuit was suggested by Electronic Engineering in a 1980s publication. The circuit makes use...