This circuit was found in a 1967 US documentation. The FET is general purpose and the 6V zener. The circuit has a very fast switching action.
This simple radio circuit was obtained in a Japanese publication in 1967. The circuit uses...
This circuit is the receiver for the previous transmitter modulated by an audio signal. The...
This CMOS circuit for LED displays is from a Radio Electronics magazine from February 1989. The...