We found this circuit in a Radio Electronics from October 1963. The circuit uses an output transformer with a center tap. The trimpot is adjusted for higher gain and lower quiescent current.
This circuit is from the SGS manual of linear integrated circuits. The circuit can be implemented with...
This simple unijunction and bipolar generator appeared in Radio Electronics magazine in September 1865....
This circuit was found in an American 1990s documentation. It can directly trigger a triac when...