This delay circuit for a sound system was found in the December 1990 Radio Electronics magazine as part of a sound system.
The circuit shown is from an old publication, from the 70s, but can be assembled with TIC106 SCRs...
This receiver is from an old English magazine from 1965. The transistors used are germanium, no...
This circuit is from Delco Radio found in a 1968’s documentation. The transistors are of the time...