This circuit shows that we can implement a voltage-controlled oscillator with almost any CMOS that can be connected as an inverter. The circuit is from Radio Electronics from January 1987.
This simple MW radio was found in a 1975 publication, but it can be mounted with BC548...
This circuit is basically the same as the previous configuration (CB15616E) with a power stage with...
This experimental receiver works with alternative sources of energy or a single cell of any type....