Found in a 1969 Burr-Brown publication, this circuit makes use of integrated components from that period. With modern equivalents, it can be adapted to be used as a shield.
This simple signal injector oscillator was found in a 1981 documentation. The coil can be made...
This interesting circuit consists of a calendar whose switching is done by sensing dusk and dawn,...
This transistorized shift register was found in a 1970s RCA documentation. The used transistors can...