This Japanese commercial radio with 5 transistors is from the 60s and is powered by 6 V. It is a conventional superheterodyne configuration with good performance.
The circuit shown in the figure can indicate the presence of static charges by lighting a 6 or 12 V...
This interesting circuit of an Electronic Design stores the highest voltage of two applied to its...
This circuit appears in other articles in this section and even in other sections of the site....