Employing a unijunction and a triac of the era, this 1964 Electronic Design circuit uses a diac to trigger the Triac.
This ohmmeter can be made with a scrap milliammeter used for continuity tests or even resistance...
This circuit was found in the November 1992 issue of Radio Electronics magazine. The circuit has...
Found in an English Maplin documentation from 1983, this circuit generates separate frequency...