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.
This circuit for the medium wave range was published in Radio Electronics in February 1958. The...
This is perhaps the first PIC project to appear in a publication. The article is from Radio...
This circuit came out in a 1983 English magazine, but it can be easily assembled today, as the...