This circuit uses only transistors and was found in a 2003 documentation. Transistor 2N3055 must be mounted on a heat sink and the voltage is set to R10.
The integrated circuits in this application are not very common today. One consists of an A / D...
Found in the Encyclopedia of Electronic Circuits Volume 5 of 1995 this circuit has the gain...
The output power of this amplifier depends on the supply voltage that can be between 3 and 16 V....