This 6W amplifier with 4 tubes was indicated in an American documentation from 1947 to operate with recorders. The circuit uses a source with a transformer.
n be assembled with BC558 transistors for low power transistors and a BD136 for the output. The...
We found this circuit in the 1994 Linear Applications Handbook from National Semiconductor. The...
It is an ideal assembly to be implemented as work by students of digital electronics courses, as...