From an audio signal, this circuit gets two signals of the same amplitude and opposite phases. This setting is widely used in bridge amplifiers (BTL). Transistors may be commonly used as BC series.
This interesting circuit from Radio Elecronics from October 1965 shows a flip-flop or bistable with...
The basic idea of the circuit shown in the figure is to increase the brightness of an ordinary...
Found in an American documentation, this regulator supplies a current according to the integrated...