For an 8 ohm load, this Motorola circuit was found in a 1968 documentation. The transistors are of the time and the power supply must be symmetrical.
We find this circuit in an Electronic Design of the 90s. The used integrated circuit admits...
This shield can be used both to interface TTL circuits and microcontrollers. The resistor in...
This circuit was obtained from an old American documentation having a limited adjustment range....