This integrated amplifier was found in a non-existent British magazine from 1975. The used integrated circuit is still popular and the mono bridged version can provide 36 W output power. 4 A.
Found in Motorola documentation from the 1980s, this circuit employs an integrated device from...
This signal strength meter (S-meter) was found in a 1975 amateur radio publication. We can use...
The circuit shown in the figure is indicated for alternative energy sources, such as those...