Obtained from an English publication in the 1980s, when a weather station operated in that country at 60 kHz, this circuit employed only two general-purpose transistors.
Found in old American documentation, this circuit demodulates signals from 1 kHz to 10 kHz for...
This simple circuit is a continuity test that, in addition to testing resistors, can also test...
This circuit was obtained from an English magazine from 1985. It consists of a pulser that drives...