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 makes it possible to reverse the direction of a DC motor through a relay controlled by a...
The A3906 integrated circuit from Allegro MicroSystems (www.allegro.com) consists of a single...
In the circuit of the figure, when pressing S1 the sound varies according to the value of R2 and...