This is a 1960s amplifier setup found in a period publication. The circuit uses a special driver transformer that inverts the phases of the signal to excite the output transistors.
The power supply for this 1972 circuit must be symmetrical and the BC549 transistors. Care with...
Found in a 90s 303 Circuits, this circuit triggers a load from a 50 mV audio signal. When the...
We found this powerful amplifier that uses common transistors in a 1998 documentation. The power...