Found in a 1969 Electronics World, this circuit generates low frequency signals with two repetition bands. Transistors support modern equivalents.
This simple remote-control circuit appeared in Radio Electronics in April 1963. It has a single...
This configuration can be found in other articles on this site. This was obtained in 1998...
This power supply was found in a RCA publication from the 1970s. The circuit uses transistors from that...