Found in a 1990s Popular Electronics, this circuit uses two transistors to boost the power of a 741 with audio signals. The power depends on the transistors used, which can be general-purpose types.
n be assembled with BC558 transistors for low power transistors and a BD136 for the output. The...
This circuit, found in 1980s documentation, produces a rectangular signal of the same frequency as the...
This mixer with few components can be tried by the reader who needs this circuit, but who does not...