We found this switching circuit in a technical documentation from National Semiconductor. The integrated circuits and the transistor must be equipped with heat radiators.
The power of this amplifier is 100 mW given by the characteristics of the transistors used. The...
Found in an American documentation from the 50's, this circuit uses two transistors of the time,...
This version is from an old 80's documentation. The SCR can be the TIC106 and the unijunction...