Found in a 1949 Radio Electronics, this commercial circuit was found in many countries, including Brazil.
Found in a 1980s publication for amateur radio, this circuit employs an MC1596G which is a...
This circuit, from a documentation from the 1970s, produces two sinusoidal signals given by C2 and...
This circuit transmits signals to an FM receiver at a distance of up to a few tens of meters. The...