Using a 4046 PLL, which is uncommon today, this circuit was found in the October 1994 issue of Electronics Now magazine. The circuit can be modified by changing the capacitor.
The circuit shown in the figure is indicated for alternative sources of energy, such as those...
This small transistor amplifier was found in an ancient American documentation. Transistors can be replaced...
This circuit was found in a Popular Electronics of the 80's. The NE602 functions as a heterodyne...