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.
We found this circuit in an American documentation. The power of the load, in this case,...
This flip-flop circuit is from a September 1985 issue of Radio Electronics magazine. It generates...
The circuit is from an Electronics Hobbyst Handbook from the 90s, being valid for panels of the...