This high-power amplifier with only 4 integrated circuits was found in the 1990 special issue of Radio Electronics Experimenter magazine. The circuit reaches 100 W per channel.
We found this zener regulator in a 1978 radio amateur documentation. The operational can be...
This sensitive circuit was found in old documentation. The SCR can be any of the 106 series and...
This simple receiver was found in a book on transistors from 1954. The coil determines the...