This circuit was found in a Mallory documentation from 1968. The integrated circuit is of the time, unusual in our day. Input sensitivity is 20 mV for 2 W output.
In fact, this circuit found in a 1960 transistor manual from Sylvania, simply turns on a lamp when...
The circuit of the figure serves the same purpose as the previous one (CB5057E), but has a...
This circuit was published in an Italian magazine Radio Elettronica in February 1976. The...