This 8 W amplifier with germanium transistors was found in a Japanese documentation from 1967. The circuit is of the commercial type and is powered by two 12 V batteries or by a symmetrical source.
In the figure a circuit that is the basic application of NE567 for the detection of a tone applied to...
This circuit is from an old Italian publication, using components that are no longer manufactured, but that...
We found this switching circuit in a technical documentation from National Semiconductor. The...