This circuit uses a CMOS integrated circuit as a basic element and can be combined with the previous circuits. The circuit is from a Radio Electronics from May 1990.
The circuit in the figure is based on two integrated LM108 and its gain is basically determined by the...
Found in a 1968 Ferranti documentation, this circuit can be implemented with modern equivalent...
This amplifier stage was equipped with a Motorola radio from the 70s. The transistors were from...